2 * Unix SMB/CIFS implementation.
3 * SMB parameters and setup
4 * Copyright (C) Andrew Tridgell 1992-1998
5 * Modified by Jeremy Allison 1995.
6 * Modified by Gerald (Jerry) Carter 2000-2001
7 * Modified by Andrew Bartlett 2002.
9 * This program is free software; you can redistribute it and/or modify it under
10 * the terms of the GNU General Public License as published by the Free
11 * Software Foundation; either version 2 of the License, or (at your option)
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
19 * You should have received a copy of the GNU General Public License along with
20 * this program; if not, write to the Free Software Foundation, Inc., 675
21 * Mass Ave, Cambridge, MA 02139, USA.
27 #define DBGC_CLASS DBGC_PASSDB
30 smb_passwd is analogous to sam_passwd used everywhere
31 else. However, smb_passwd is limited to the information
32 stored by an smbpasswd entry
37 BOOL smb_userid_set; /* this is actually the unix uid_t */
38 uint32 smb_userid; /* this is actually the unix uid_t */
39 const char *smb_name; /* username string */
41 const unsigned char *smb_passwd; /* Null if no password */
42 const unsigned char *smb_nt_passwd; /* Null if no password */
44 uint16 acct_ctrl; /* account info (ACB_xxxx bit-mask) */
45 time_t pass_last_set_time; /* password last set time */
48 struct smbpasswd_privates
50 /* used for maintain locks on the smbpasswd file */
51 int pw_file_lock_depth;
53 /* Global File pointer */
56 /* formerly static variables */
57 struct smb_passwd pw_buf;
59 unsigned char smbpwd[16];
60 unsigned char smbntpwd[16];
62 /* retrive-once info */
63 const char *smbpasswd_file;
65 BOOL permit_non_unix_accounts;
67 uint32 low_nua_userid;
68 uint32 high_nua_userid;
72 enum pwf_access_type { PWF_READ, PWF_UPDATE, PWF_CREATE };
74 /***************************************************************
75 Lock an fd. Abandon after waitsecs seconds.
76 ****************************************************************/
78 static BOOL pw_file_lock(int fd, int type, int secs, int *plock_depth)
83 if(*plock_depth == 0) {
84 if (!do_file_lock(fd, secs, type)) {
85 DEBUG(10,("pw_file_lock: locking file failed, error = %s.\n",
96 /***************************************************************
97 Unlock an fd. Abandon after waitsecs seconds.
98 ****************************************************************/
100 static BOOL pw_file_unlock(int fd, int *plock_depth)
104 if (fd == 0 || *plock_depth == 0) {
108 if(*plock_depth == 1)
109 ret = do_file_lock(fd, 5, F_UNLCK);
111 if (*plock_depth > 0)
115 DEBUG(10,("pw_file_unlock: unlocking file failed, error = %s.\n",
121 /**************************************************************
122 Intialize a smb_passwd struct
123 *************************************************************/
125 static void pdb_init_smb(struct smb_passwd *user)
131 user->pass_last_set_time = (time_t)0;
134 /***************************************************************
135 Internal fn to enumerate the smbpasswd list. Returns a void pointer
136 to ensure no modification outside this module. Checks for atomic
137 rename of smbpasswd file on update or create once the lock has
138 been granted to prevent race conditions. JRA.
139 ****************************************************************/
141 static FILE *startsmbfilepwent(const char *pfile, enum pwf_access_type type, int *lock_depth)
144 const char *open_mode = NULL;
146 int lock_type = F_RDLCK;
149 DEBUG(0, ("startsmbfilepwent: No SMB password file set\n"));
164 * Ensure atomic file creation.
169 for(i = 0; i < 5; i++) {
170 if((fd = sys_open(pfile, O_CREAT|O_TRUNC|O_EXCL|O_RDWR, 0600))!=-1)
172 sys_usleep(200); /* Spin, spin... */
175 DEBUG(0,("startsmbfilepwent_internal: too many race conditions creating file %s\n", pfile));
185 for(race_loop = 0; race_loop < 5; race_loop++) {
186 DEBUG(10, ("startsmbfilepwent_internal: opening file %s\n", pfile));
188 if((fp = sys_fopen(pfile, open_mode)) == NULL) {
189 DEBUG(0, ("startsmbfilepwent_internal: unable to open file %s. Error was %s\n", pfile, strerror(errno) ));
193 if (!pw_file_lock(fileno(fp), lock_type, 5, lock_depth)) {
194 DEBUG(0, ("startsmbfilepwent_internal: unable to lock file %s. Error was %s\n", pfile, strerror(errno) ));
200 * Only check for replacement races on update or create.
201 * For read we don't mind if the data is one record out of date.
204 if(type == PWF_READ) {
207 SMB_STRUCT_STAT sbuf1, sbuf2;
210 * Avoid the potential race condition between the open and the lock
211 * by doing a stat on the filename and an fstat on the fd. If the
212 * two inodes differ then someone did a rename between the open and
213 * the lock. Back off and try the open again. Only do this 5 times to
214 * prevent infinate loops. JRA.
217 if (sys_stat(pfile,&sbuf1) != 0) {
218 DEBUG(0, ("startsmbfilepwent_internal: unable to stat file %s. Error was %s\n", pfile, strerror(errno)));
219 pw_file_unlock(fileno(fp), lock_depth);
224 if (sys_fstat(fileno(fp),&sbuf2) != 0) {
225 DEBUG(0, ("startsmbfilepwent_internal: unable to fstat file %s. Error was %s\n", pfile, strerror(errno)));
226 pw_file_unlock(fileno(fp), lock_depth);
231 if( sbuf1.st_ino == sbuf2.st_ino) {
237 * Race occurred - back off and try again...
240 pw_file_unlock(fileno(fp), lock_depth);
246 DEBUG(0, ("startsmbfilepwent_internal: too many race conditions opening file %s\n", pfile));
250 /* Set a buffer to do more efficient reads */
251 setvbuf(fp, (char *)NULL, _IOFBF, 1024);
253 /* Make sure it is only rw by the owner */
254 if(fchmod(fileno(fp), S_IRUSR|S_IWUSR) == -1) {
255 DEBUG(0, ("startsmbfilepwent_internal: failed to set 0600 permissions on password file %s. \
256 Error was %s\n.", pfile, strerror(errno) ));
257 pw_file_unlock(fileno(fp), lock_depth);
262 /* We have a lock on the file. */
266 /***************************************************************
267 End enumeration of the smbpasswd list.
268 ****************************************************************/
269 static void endsmbfilepwent(FILE *fp, int *lock_depth)
275 pw_file_unlock(fileno(fp), lock_depth);
277 DEBUG(7, ("endsmbfilepwent_internal: closed password file.\n"));
280 /*************************************************************************
281 Routine to return the next entry in the smbpasswd list.
282 *************************************************************************/
284 static struct smb_passwd *getsmbfilepwent(struct smbpasswd_privates *smbpasswd_state, FILE *fp)
286 /* Static buffers we will return. */
287 struct smb_passwd *pw_buf = &smbpasswd_state->pw_buf;
288 char *user_name = smbpasswd_state->user_name;
289 unsigned char *smbpwd = smbpasswd_state->smbpwd;
290 unsigned char *smbntpwd = smbpasswd_state->smbntpwd;
298 DEBUG(0,("getsmbfilepwent: Bad password file pointer.\n"));
302 pdb_init_smb(pw_buf);
304 pw_buf->acct_ctrl = ACB_NORMAL;
307 * Scan the file, a line at a time and check if the name matches.
312 fgets(linebuf, 256, fp);
318 * Check if the string is terminated with a newline - if not
319 * then we must keep reading and discard until we get one.
321 if ((linebuf_len = strlen(linebuf)) == 0)
324 if (linebuf[linebuf_len - 1] != '\n') {
326 while (!ferror(fp) && !feof(fp)) {
332 linebuf[linebuf_len - 1] = '\0';
334 #ifdef DEBUG_PASSWORD
335 DEBUG(100, ("getsmbfilepwent: got line |%s|\n", linebuf));
337 if ((linebuf[0] == 0) && feof(fp)) {
338 DEBUG(4, ("getsmbfilepwent: end of file reached\n"));
342 * The line we have should be of the form :-
344 * username:uid:32hex bytes:[Account type]:LCT-12345678....other flags presently
349 * username:uid:32hex bytes:32hex bytes:[Account type]:LCT-12345678....ignored....
351 * if Windows NT compatible passwords are also present.
352 * [Account type] is an ascii encoding of the type of account.
353 * LCT-(8 hex digits) is the time_t value of the last change time.
356 if (linebuf[0] == '#' || linebuf[0] == '\0') {
357 DEBUG(6, ("getsmbfilepwent: skipping comment or blank line\n"));
360 p = (unsigned char *) strchr_m(linebuf, ':');
362 DEBUG(0, ("getsmbfilepwent: malformed password entry (no :)\n"));
366 * As 256 is shorter than a pstring we don't need to check
367 * length here - if this ever changes....
369 SMB_ASSERT(sizeof(pstring) > sizeof(linebuf));
371 strncpy(user_name, linebuf, PTR_DIFF(p, linebuf));
372 user_name[PTR_DIFF(p, linebuf)] = '\0';
376 p++; /* Go past ':' */
379 DEBUG(0, ("getsmbfilepwent: uids in the smbpasswd file must not be negative.\n"));
384 DEBUG(0, ("getsmbfilepwent: malformed password entry (uid not number)\n"));
388 uidval = atoi((char *) p);
390 while (*p && isdigit(*p))
394 DEBUG(0, ("getsmbfilepwent: malformed password entry (no : after uid)\n"));
398 pw_buf->smb_name = user_name;
399 pw_buf->smb_userid = uidval;
402 * Now get the password value - this should be 32 hex digits
403 * which are the ascii representations of a 16 byte string.
404 * Get two at a time and put them into the password.
410 if (*p == '*' || *p == 'X') {
411 /* Password deliberately invalid - end here. */
412 DEBUG(10, ("getsmbfilepwent: entry invalidated for user %s\n", user_name));
413 pw_buf->smb_nt_passwd = NULL;
414 pw_buf->smb_passwd = NULL;
415 pw_buf->acct_ctrl |= ACB_DISABLED;
419 if (linebuf_len < (PTR_DIFF(p, linebuf) + 33)) {
420 DEBUG(0, ("getsmbfilepwent: malformed password entry (passwd too short)\n"));
425 DEBUG(0, ("getsmbfilepwent: malformed password entry (no terminating :)\n"));
429 if (!strncasecmp((char *) p, "NO PASSWORD", 11)) {
430 pw_buf->smb_passwd = NULL;
431 pw_buf->acct_ctrl |= ACB_PWNOTREQ;
433 if (!pdb_gethexpwd((char *)p, smbpwd)) {
434 DEBUG(0, ("getsmbfilepwent: Malformed Lanman password entry (non hex chars)\n"));
437 pw_buf->smb_passwd = smbpwd;
441 * Now check if the NT compatible password is
444 pw_buf->smb_nt_passwd = NULL;
446 p += 33; /* Move to the first character of the line after
447 the lanman password. */
448 if ((linebuf_len >= (PTR_DIFF(p, linebuf) + 33)) && (p[32] == ':')) {
449 if (*p != '*' && *p != 'X') {
450 if(pdb_gethexpwd((char *)p,smbntpwd))
451 pw_buf->smb_nt_passwd = smbntpwd;
453 p += 33; /* Move to the first character of the line after
457 DEBUG(5,("getsmbfilepwent: returning passwd entry for user %s, uid %ld\n",
462 unsigned char *end_p = (unsigned char *)strchr_m((char *)p, ']');
463 pw_buf->acct_ctrl = pdb_decode_acct_ctrl((char*)p);
465 /* Must have some account type set. */
466 if(pw_buf->acct_ctrl == 0)
467 pw_buf->acct_ctrl = ACB_NORMAL;
469 /* Now try and get the last change time. */
474 if(*p && (StrnCaseCmp((char *)p, "LCT-", 4)==0)) {
477 for(i = 0; i < 8; i++) {
478 if(p[i] == '\0' || !isxdigit(p[i]))
483 * p points at 8 characters of hex digits -
484 * read into a time_t as the seconds since
485 * 1970 that the password was last changed.
487 pw_buf->pass_last_set_time = (time_t)strtol((char *)p, NULL, 16);
492 /* 'Old' style file. Fake up based on user name. */
494 * Currently trust accounts are kept in the same
495 * password file as 'normal accounts'. If this changes
496 * we will have to fix this code. JRA.
498 if(pw_buf->smb_name[strlen(pw_buf->smb_name) - 1] == '$') {
499 pw_buf->acct_ctrl &= ~ACB_NORMAL;
500 pw_buf->acct_ctrl |= ACB_WSTRUST;
507 DEBUG(5,("getsmbfilepwent: end of file reached.\n"));
511 /************************************************************************
512 Create a new smbpasswd entry - malloced space returned.
513 *************************************************************************/
515 static char *format_new_smbpasswd_entry(const struct smb_passwd *newpwd)
517 int new_entry_length;
521 new_entry_length = strlen(newpwd->smb_name) + 1 + 15 + 1 + 32 + 1 + 32 + 1 + NEW_PW_FORMAT_SPACE_PADDED_LEN + 1 + 13 + 2;
523 if((new_entry = (char *)malloc( new_entry_length )) == NULL) {
524 DEBUG(0, ("format_new_smbpasswd_entry: Malloc failed adding entry for user %s.\n", newpwd->smb_name ));
528 slprintf(new_entry, new_entry_length - 1, "%s:%u:", newpwd->smb_name, (unsigned)newpwd->smb_userid);
530 p = new_entry+strlen(new_entry);
532 pdb_sethexpwd(p, newpwd->smb_passwd, newpwd->acct_ctrl);
534 p+=strlen(p); *p = ':'; p++;
536 pdb_sethexpwd(p, newpwd->smb_nt_passwd, newpwd->acct_ctrl);
538 p+=strlen(p); *p = ':'; p++;
540 /* Add the account encoding and the last change time. */
541 slprintf((char *)p, new_entry_length - 1 - (p - new_entry), "%s:LCT-%08X:\n",
542 pdb_encode_acct_ctrl(newpwd->acct_ctrl, NEW_PW_FORMAT_SPACE_PADDED_LEN),
543 (uint32)newpwd->pass_last_set_time);
548 /************************************************************************
549 Routine to add an entry to the smbpasswd file.
550 *************************************************************************/
552 static BOOL add_smbfilepwd_entry(struct smbpasswd_privates *smbpasswd_state, struct smb_passwd *newpwd)
554 const char *pfile = smbpasswd_state->smbpasswd_file;
555 struct smb_passwd *pwd = NULL;
559 size_t new_entry_length;
562 uint32 max_found_uid = 0;
564 /* Open the smbpassword file - for update. */
565 fp = startsmbfilepwent(pfile, PWF_UPDATE, &(smbpasswd_state->pw_file_lock_depth));
567 if (fp == NULL && errno == ENOENT) {
568 /* Try again - create. */
569 fp = startsmbfilepwent(pfile, PWF_CREATE, &(smbpasswd_state->pw_file_lock_depth));
573 DEBUG(0, ("add_smbfilepwd_entry: unable to open file.\n"));
578 * Scan the file, a line at a time and check if the name matches.
581 while ((pwd = getsmbfilepwent(smbpasswd_state, fp)) != NULL)
583 if (strequal(newpwd->smb_name, pwd->smb_name))
585 DEBUG(0, ("add_smbfilepwd_entry: entry with name %s already exists\n", pwd->smb_name));
586 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
590 /* Look for a free uid for use in non-unix accounts */
591 if (pwd->smb_userid > max_found_uid) {
592 max_found_uid = pwd->smb_userid;
596 /* Ok - entry doesn't exist. We can add it */
598 /* Account not in /etc/passwd hack!!! */
599 if (!newpwd->smb_userid_set) {
600 if (!smbpasswd_state->permit_non_unix_accounts) {
601 DEBUG(0, ("add_smbfilepwd_entry: cannot add account %s without unix identity\n", newpwd->smb_name));
602 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
606 if (max_found_uid < smbpasswd_state->low_nua_userid) {
607 newpwd->smb_userid = smbpasswd_state->low_nua_userid;
608 newpwd->smb_userid_set = True;
609 } else if (max_found_uid >= smbpasswd_state->high_nua_userid) {
610 DEBUG(0, ("add_smbfilepwd_entry: cannot add machine %s, no uids are free! \n", newpwd->smb_name));
611 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
614 newpwd->smb_userid = max_found_uid + 1;
615 newpwd->smb_userid_set = True;
620 /* Create a new smb passwd entry and set it to the given password. */
622 * The add user write needs to be atomic - so get the fd from
623 * the fp and do a raw write() call.
627 if((offpos = sys_lseek(fd, 0, SEEK_END)) == -1)
629 DEBUG(0, ("add_smbfilepwd_entry(sys_lseek): Failed to add entry for user %s to file %s. \
630 Error was %s\n", newpwd->smb_name, pfile, strerror(errno)));
631 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
635 if((new_entry = format_new_smbpasswd_entry(newpwd)) == NULL)
637 DEBUG(0, ("add_smbfilepwd_entry(malloc): Failed to add entry for user %s to file %s. \
638 Error was %s\n", newpwd->smb_name, pfile, strerror(errno)));
639 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
643 new_entry_length = strlen(new_entry);
645 #ifdef DEBUG_PASSWORD
646 DEBUG(100, ("add_smbfilepwd_entry(%d): new_entry_len %d made line |%s|",
647 fd, new_entry_length, new_entry));
650 if ((wr_len = write(fd, new_entry, new_entry_length)) != new_entry_length)
652 DEBUG(0, ("add_smbfilepwd_entry(write): %d Failed to add entry for user %s to file %s. \
653 Error was %s\n", wr_len, newpwd->smb_name, pfile, strerror(errno)));
655 /* Remove the entry we just wrote. */
656 if(sys_ftruncate(fd, offpos) == -1)
658 DEBUG(0, ("add_smbfilepwd_entry: ERROR failed to ftruncate file %s. \
659 Error was %s. Password file may be corrupt ! Please examine by hand !\n",
660 newpwd->smb_name, strerror(errno)));
663 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
669 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
673 /************************************************************************
674 Routine to search the smbpasswd file for an entry matching the username.
675 and then modify its password entry. We can't use the startsmbpwent()/
676 getsmbpwent()/endsmbpwent() interfaces here as we depend on looking
677 in the actual file to decide how much room we have to write data.
678 override = False, normal
679 override = True, override XXXXXXXX'd out password or NO PASS
680 ************************************************************************/
682 static BOOL mod_smbfilepwd_entry(struct smbpasswd_privates *smbpasswd_state, const struct smb_passwd* pwd)
684 /* Static buffers we will return. */
692 unsigned char *p = NULL;
693 size_t linebuf_len = 0;
696 const char *pfile = smbpasswd_state->smbpasswd_file;
697 BOOL found_entry = False;
698 BOOL got_pass_last_set_time = False;
700 SMB_OFF_T pwd_seekpos = 0;
707 DEBUG(0, ("No SMB password file set\n"));
710 DEBUG(10, ("mod_smbfilepwd_entry: opening file %s\n", pfile));
712 fp = sys_fopen(pfile, "r+");
715 DEBUG(0, ("mod_smbfilepwd_entry: unable to open file %s\n", pfile));
718 /* Set a buffer to do more efficient reads */
719 setvbuf(fp, readbuf, _IOFBF, sizeof(readbuf));
723 if (!pw_file_lock(lockfd, F_WRLCK, 5, &(smbpasswd_state->pw_file_lock_depth))) {
724 DEBUG(0, ("mod_smbfilepwd_entry: unable to lock file %s\n", pfile));
729 /* Make sure it is only rw by the owner */
732 /* We have a write lock on the file. */
734 * Scan the file, a line at a time and check if the name matches.
737 pwd_seekpos = sys_ftell(fp);
741 fgets(linebuf, sizeof(linebuf), fp);
743 pw_file_unlock(lockfd, &(smbpasswd_state->pw_file_lock_depth));
749 * Check if the string is terminated with a newline - if not
750 * then we must keep reading and discard until we get one.
752 linebuf_len = strlen(linebuf);
753 if (linebuf[linebuf_len - 1] != '\n') {
755 while (!ferror(fp) && !feof(fp)) {
762 linebuf[linebuf_len - 1] = '\0';
765 #ifdef DEBUG_PASSWORD
766 DEBUG(100, ("mod_smbfilepwd_entry: got line |%s|\n", linebuf));
769 if ((linebuf[0] == 0) && feof(fp)) {
770 DEBUG(4, ("mod_smbfilepwd_entry: end of file reached\n"));
775 * The line we have should be of the form :-
777 * username:uid:[32hex bytes]:....other flags presently
782 * username:uid:[32hex bytes]:[32hex bytes]:[attributes]:LCT-XXXXXXXX:...ignored.
784 * if Windows NT compatible passwords are also present.
787 if (linebuf[0] == '#' || linebuf[0] == '\0') {
788 DEBUG(6, ("mod_smbfilepwd_entry: skipping comment or blank line\n"));
792 p = (unsigned char *) strchr_m(linebuf, ':');
795 DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (no :)\n"));
800 * As 256 is shorter than a pstring we don't need to check
801 * length here - if this ever changes....
804 SMB_ASSERT(sizeof(user_name) > sizeof(linebuf));
806 strncpy(user_name, linebuf, PTR_DIFF(p, linebuf));
807 user_name[PTR_DIFF(p, linebuf)] = '\0';
808 if (strequal(user_name, pwd->smb_name)) {
815 pw_file_unlock(lockfd, &(smbpasswd_state->pw_file_lock_depth));
818 DEBUG(2, ("Cannot update entry for user %s, as they don't exist in the smbpasswd file!\n",
823 DEBUG(6, ("mod_smbfilepwd_entry: entry exists\n"));
825 /* User name matches - get uid and password */
826 p++; /* Go past ':' */
829 DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (uid not number)\n"));
830 pw_file_unlock(lockfd, &(smbpasswd_state->pw_file_lock_depth));
835 while (*p && isdigit(*p))
838 DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (no : after uid)\n"));
839 pw_file_unlock(lockfd, &(smbpasswd_state->pw_file_lock_depth));
845 * Now get the password value - this should be 32 hex digits
846 * which are the ascii representations of a 16 byte string.
847 * Get two at a time and put them into the password.
851 /* Record exact password position */
852 pwd_seekpos += PTR_DIFF(p, linebuf);
854 if (linebuf_len < (PTR_DIFF(p, linebuf) + 33)) {
855 DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (passwd too short)\n"));
856 pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth));
862 DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (no terminating :)\n"));
863 pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth));
868 /* Now check if the NT compatible password is
870 p += 33; /* Move to the first character of the line after
871 the lanman password. */
872 if (linebuf_len < (PTR_DIFF(p, linebuf) + 33)) {
873 DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (passwd too short)\n"));
874 pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth));
880 DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (no terminating :)\n"));
881 pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth));
887 * Now check if the account info and the password last
888 * change time is available.
890 p += 33; /* Move to the first character of the line after
896 encode_bits[i++] = *p++;
897 while((linebuf_len > PTR_DIFF(p, linebuf)) && (*p != ']'))
898 encode_bits[i++] = *p++;
900 encode_bits[i++] = ']';
901 encode_bits[i++] = '\0';
903 if(i == NEW_PW_FORMAT_SPACE_PADDED_LEN) {
905 * We are using a new format, space padded
906 * acct ctrl field. Encode the given acct ctrl
909 fstrcpy(encode_bits, pdb_encode_acct_ctrl(pwd->acct_ctrl, NEW_PW_FORMAT_SPACE_PADDED_LEN));
911 DEBUG(0,("mod_smbfilepwd_entry: Using old smbpasswd format. This is no longer supported.!\n"));
912 DEBUG(0,("mod_smbfilepwd_entry: No changes made, failing.!\n"));
916 /* Go past the ']' */
917 if(linebuf_len > PTR_DIFF(p, linebuf))
920 if((linebuf_len > PTR_DIFF(p, linebuf)) && (*p == ':')) {
923 /* We should be pointing at the LCT entry. */
924 if((linebuf_len > (PTR_DIFF(p, linebuf) + 13)) && (StrnCaseCmp((char *)p, "LCT-", 4) == 0)) {
927 for(i = 0; i < 8; i++) {
928 if(p[i] == '\0' || !isxdigit(p[i]))
933 * p points at 8 characters of hex digits -
934 * read into a time_t as the seconds since
935 * 1970 that the password was last changed.
937 got_pass_last_set_time = True;
939 } /* *p && StrnCaseCmp() */
943 /* Entry is correctly formed. */
945 /* Create the 32 byte representation of the new p16 */
946 pdb_sethexpwd(ascii_p16, pwd->smb_passwd, pwd->acct_ctrl);
948 /* Add on the NT md4 hash */
951 pdb_sethexpwd(ascii_p16+33, pwd->smb_nt_passwd, pwd->acct_ctrl);
953 ascii_p16[66] = '\0'; /* null-terminate the string so that strlen works */
955 /* Add on the account info bits and the time of last
958 if(got_pass_last_set_time) {
959 slprintf(&ascii_p16[strlen(ascii_p16)],
960 sizeof(ascii_p16)-(strlen(ascii_p16)+1),
962 encode_bits, (uint32)pwd->pass_last_set_time );
963 wr_len = strlen(ascii_p16);
966 #ifdef DEBUG_PASSWORD
967 DEBUG(100,("mod_smbfilepwd_entry: "));
968 dump_data(100, ascii_p16, wr_len);
971 if(wr_len > sizeof(linebuf)) {
972 DEBUG(0, ("mod_smbfilepwd_entry: line to write (%d) is too long.\n", wr_len+1));
973 pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth));
979 * Do an atomic write into the file at the position defined by
983 /* The mod user write needs to be atomic - so get the fd from
984 the fp and do a raw write() call.
989 if (sys_lseek(fd, pwd_seekpos - 1, SEEK_SET) != pwd_seekpos - 1) {
990 DEBUG(0, ("mod_smbfilepwd_entry: seek fail on file %s.\n", pfile));
991 pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth));
996 /* Sanity check - ensure the areas we are writing are framed by ':' */
997 if (read(fd, linebuf, wr_len+1) != wr_len+1) {
998 DEBUG(0, ("mod_smbfilepwd_entry: read fail on file %s.\n", pfile));
999 pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth));
1004 if ((linebuf[0] != ':') || (linebuf[wr_len] != ':')) {
1005 DEBUG(0, ("mod_smbfilepwd_entry: check on passwd file %s failed.\n", pfile));
1006 pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth));
1011 if (sys_lseek(fd, pwd_seekpos, SEEK_SET) != pwd_seekpos) {
1012 DEBUG(0, ("mod_smbfilepwd_entry: seek fail on file %s.\n", pfile));
1013 pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth));
1018 if (write(fd, ascii_p16, wr_len) != wr_len) {
1019 DEBUG(0, ("mod_smbfilepwd_entry: write failed in passwd file %s\n", pfile));
1020 pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth));
1025 pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth));
1030 /************************************************************************
1031 Routine to delete an entry in the smbpasswd file by name.
1032 *************************************************************************/
1034 static BOOL del_smbfilepwd_entry(struct smbpasswd_privates *smbpasswd_state, const char *name)
1036 const char *pfile = smbpasswd_state->smbpasswd_file;
1038 struct smb_passwd *pwd = NULL;
1040 FILE *fp_write = NULL;
1041 int pfile2_lockdepth = 0;
1043 slprintf(pfile2, sizeof(pfile2)-1, "%s.%u", pfile, (unsigned)sys_getpid() );
1046 * Open the smbpassword file - for update. It needs to be update
1047 * as we need any other processes to wait until we have replaced
1051 if((fp = startsmbfilepwent(pfile, PWF_UPDATE, &(smbpasswd_state->pw_file_lock_depth))) == NULL) {
1052 DEBUG(0, ("del_smbfilepwd_entry: unable to open file %s.\n", pfile));
1057 * Create the replacement password file.
1059 if((fp_write = startsmbfilepwent(pfile2, PWF_CREATE, &pfile2_lockdepth)) == NULL) {
1060 DEBUG(0, ("del_smbfilepwd_entry: unable to open file %s.\n", pfile));
1061 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
1066 * Scan the file, a line at a time and check if the name matches.
1069 while ((pwd = getsmbfilepwent(smbpasswd_state, fp)) != NULL) {
1071 size_t new_entry_length;
1073 if (strequal(name, pwd->smb_name)) {
1074 DEBUG(10, ("add_smbfilepwd_entry: found entry with name %s - deleting it.\n", name));
1079 * We need to copy the entry out into the second file.
1082 if((new_entry = format_new_smbpasswd_entry(pwd)) == NULL)
1084 DEBUG(0, ("del_smbfilepwd_entry(malloc): Failed to copy entry for user %s to file %s. \
1085 Error was %s\n", pwd->smb_name, pfile2, strerror(errno)));
1087 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
1088 endsmbfilepwent(fp_write, &pfile2_lockdepth);
1092 new_entry_length = strlen(new_entry);
1094 if(fwrite(new_entry, 1, new_entry_length, fp_write) != new_entry_length)
1096 DEBUG(0, ("del_smbfilepwd_entry(write): Failed to copy entry for user %s to file %s. \
1097 Error was %s\n", pwd->smb_name, pfile2, strerror(errno)));
1099 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
1100 endsmbfilepwent(fp_write, &pfile2_lockdepth);
1109 * Ensure pfile2 is flushed before rename.
1112 if(fflush(fp_write) != 0)
1114 DEBUG(0, ("del_smbfilepwd_entry: Failed to flush file %s. Error was %s\n", pfile2, strerror(errno)));
1115 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
1116 endsmbfilepwent(fp_write,&pfile2_lockdepth);
1121 * Do an atomic rename - then release the locks.
1124 if(rename(pfile2,pfile) != 0) {
1128 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
1129 endsmbfilepwent(fp_write,&pfile2_lockdepth);
1133 /*********************************************************************
1134 Create a smb_passwd struct from a SAM_ACCOUNT.
1135 We will not allocate any new memory. The smb_passwd struct
1136 should only stay around as long as the SAM_ACCOUNT does.
1137 ********************************************************************/
1138 static BOOL build_smb_pass (struct smb_passwd *smb_pw, const SAM_ACCOUNT *sampass)
1142 if (sampass == NULL)
1145 ZERO_STRUCTP(smb_pw);
1147 if (!IS_SAM_UNIX_USER(sampass)) {
1148 smb_pw->smb_userid_set = False;
1149 DEBUG(5,("build_smb_pass: storing user without a UNIX uid or gid. \n"));
1151 uint32 rid = pdb_get_user_rid(sampass);
1152 smb_pw->smb_userid_set = True;
1153 uid = pdb_get_uid(sampass);
1155 /* If the user specified a RID, make sure its able to be both stored and retreived */
1156 if (rid && uid != fallback_pdb_user_rid_to_uid(rid)) {
1157 DEBUG(0,("build_sam_pass: Failing attempt to store user with non-uid based user RID. \n"));
1161 smb_pw->smb_userid=uid;
1164 smb_pw->smb_name=(const char*)pdb_get_username(sampass);
1166 smb_pw->smb_passwd=pdb_get_lanman_passwd(sampass);
1167 smb_pw->smb_nt_passwd=pdb_get_nt_passwd(sampass);
1169 smb_pw->acct_ctrl=pdb_get_acct_ctrl(sampass);
1170 smb_pw->pass_last_set_time=pdb_get_pass_last_set_time(sampass);
1174 * ifdef'out by JFM on 11/29/2001.
1175 * this assertion is no longer valid
1176 * and I don't understand the goal
1177 * and doing the same thing with the group mapping code
1180 * We just have the RID, in which SID is it valid ?
1181 * our domain SID ? well known SID ? local SID ?
1184 if (gid != pdb_group_rid_to_gid(pdb_get_group_rid(sampass))) {
1185 DEBUG(0,("build_sam_pass: Failing attempt to store user with non-gid based primary group RID. \n"));
1186 DEBUG(0,("build_sam_pass: %d %d %d. \n", *gid, pdb_group_rid_to_gid(pdb_get_group_rid(sampass)), pdb_get_group_rid(sampass)));
1194 /*********************************************************************
1195 Create a SAM_ACCOUNT from a smb_passwd struct
1196 ********************************************************************/
1197 static BOOL build_sam_account(struct smbpasswd_privates *smbpasswd_state,
1198 SAM_ACCOUNT *sam_pass, const struct smb_passwd *pw_buf)
1200 struct passwd *pwfile;
1202 if (sam_pass==NULL) {
1203 DEBUG(5,("build_sam_account: SAM_ACCOUNT is NULL\n"));
1207 if ((smbpasswd_state->permit_non_unix_accounts)
1208 && (pw_buf->smb_userid >= smbpasswd_state->low_nua_userid)
1209 && (pw_buf->smb_userid <= smbpasswd_state->high_nua_userid)) {
1211 pdb_set_user_sid_from_rid(sam_pass, fallback_pdb_uid_to_user_rid (pw_buf->smb_userid));
1213 /* lkclXXXX this is OBSERVED behaviour by NT PDCs, enforced here.
1215 This was down the bottom for machines, but it looks pretty good as
1216 a general default for non-unix users. --abartlet 2002-01-08
1218 pdb_set_group_sid_from_rid (sam_pass, DOMAIN_GROUP_RID_USERS);
1219 pdb_set_username (sam_pass, pw_buf->smb_name);
1220 pdb_set_domain (sam_pass, lp_workgroup());
1223 pwfile = getpwnam_alloc(pw_buf->smb_name);
1224 if (pwfile == NULL) {
1225 DEBUG(0,("build_sam_account: smbpasswd database is corrupt! username %s with uid %u is not in unix passwd database!\n", pw_buf->smb_name, pw_buf->smb_userid));
1229 if (!NT_STATUS_IS_OK(pdb_fill_sam_pw(sam_pass, pwfile))) {
1233 passwd_free(&pwfile);
1236 pdb_set_nt_passwd (sam_pass, pw_buf->smb_nt_passwd);
1237 pdb_set_lanman_passwd (sam_pass, pw_buf->smb_passwd);
1238 pdb_set_acct_ctrl (sam_pass, pw_buf->acct_ctrl);
1239 pdb_set_pass_last_set_time (sam_pass, pw_buf->pass_last_set_time);
1240 pdb_set_pass_can_change_time (sam_pass, pw_buf->pass_last_set_time, True);
1243 /* the smbpasswd format doesn't have a must change time field, so
1244 we can't get this right. The best we can do is to set this to
1245 some time in the future. 21 days seems as reasonable as any other value :)
1247 pdb_set_pass_must_change_time (sam_pass, pw_buf->pass_last_set_time + MAX_PASSWORD_AGE);
1252 /*****************************************************************
1253 Functions to be implemented by the new passdb API
1254 ****************************************************************/
1255 static BOOL smbpasswd_setsampwent (struct pdb_methods *my_methods, BOOL update)
1257 struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
1259 smbpasswd_state->pw_file = startsmbfilepwent(smbpasswd_state->smbpasswd_file,
1260 update ? PWF_UPDATE : PWF_READ,
1261 &(smbpasswd_state->pw_file_lock_depth));
1263 /* did we fail? Should we try to create it? */
1264 if (!smbpasswd_state->pw_file && update && errno == ENOENT)
1267 /* slprintf(msg_str,msg_str_len-1,
1268 "smbpasswd file did not exist - attempting to create it.\n"); */
1269 DEBUG(0,("smbpasswd file did not exist - attempting to create it.\n"));
1270 fp = sys_fopen(smbpasswd_state->smbpasswd_file, "w");
1273 fprintf(fp, "# Samba SMB password file\n");
1277 smbpasswd_state->pw_file = startsmbfilepwent(smbpasswd_state->smbpasswd_file,
1278 update ? PWF_UPDATE : PWF_READ,
1279 &(smbpasswd_state->pw_file_lock_depth));
1282 return (smbpasswd_state->pw_file != NULL);
1285 static void smbpasswd_endsampwent (struct pdb_methods *my_methods)
1287 struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
1288 endsmbfilepwent(smbpasswd_state->pw_file, &(smbpasswd_state->pw_file_lock_depth));
1291 /*****************************************************************
1292 ****************************************************************/
1293 static BOOL smbpasswd_getsampwent(struct pdb_methods *my_methods, SAM_ACCOUNT *user)
1295 struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
1296 struct smb_passwd *pw_buf=NULL;
1298 DEBUG(5,("pdb_getsampwent\n"));
1301 DEBUG(5,("pdb_getsampwent (smbpasswd): user is NULL\n"));
1303 smb_panic("NULL pointer passed to getsampwent (smbpasswd)\n");
1310 /* do we have an entry? */
1311 pw_buf = getsmbfilepwent(smbpasswd_state, smbpasswd_state->pw_file);
1315 /* build the SAM_ACCOUNT entry from the smb_passwd struct.
1316 We loop in case the user in the pdb does not exist in
1317 the local system password file */
1318 if (build_sam_account(smbpasswd_state, user, pw_buf))
1322 DEBUG(5,("getsampwent (smbpasswd): done\n"));
1329 /****************************************************************
1330 Search smbpasswd file by iterating over the entries. Do not
1331 call getpwnam() for unix account information until we have found
1333 ***************************************************************/
1334 static BOOL smbpasswd_getsampwnam(struct pdb_methods *my_methods, SAM_ACCOUNT *sam_acct, const char *username)
1336 struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
1337 struct smb_passwd *smb_pw;
1340 DEBUG(10, ("getsampwnam (smbpasswd): search by name: %s\n", username));
1342 /* startsmbfilepwent() is used here as we don't want to lookup
1343 the UNIX account in the local system password file until
1345 fp = startsmbfilepwent(smbpasswd_state->smbpasswd_file, PWF_READ, &(smbpasswd_state->pw_file_lock_depth));
1348 DEBUG(0, ("unable to open passdb database.\n"));
1352 while ( ((smb_pw=getsmbfilepwent(smbpasswd_state, fp)) != NULL)&& (!strequal(smb_pw->smb_name, username)) )
1353 /* do nothing....another loop */ ;
1355 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
1358 /* did we locate the username in smbpasswd */
1362 DEBUG(10, ("getsampwnam (smbpasswd): found by name: %s\n", smb_pw->smb_name));
1365 DEBUG(10,("getsampwnam (smbpasswd): SAM_ACCOUNT is NULL\n"));
1367 smb_panic("NULL pointer passed to pdb_getsampwnam\n");
1372 /* now build the SAM_ACCOUNT */
1373 if (!build_sam_account(smbpasswd_state, sam_acct, smb_pw))
1380 static BOOL smbpasswd_getsampwrid(struct pdb_methods *my_methods, SAM_ACCOUNT *sam_acct,uint32 rid)
1382 struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
1383 struct smb_passwd *smb_pw;
1386 DEBUG(10, ("pdb_getsampwrid: search by rid: %d\n", rid));
1388 /* Open the sam password file - not for update. */
1389 fp = startsmbfilepwent(smbpasswd_state->smbpasswd_file, PWF_READ, &(smbpasswd_state->pw_file_lock_depth));
1392 DEBUG(0, ("unable to open passdb database.\n"));
1396 while ( ((smb_pw=getsmbfilepwent(smbpasswd_state, fp)) != NULL) && (fallback_pdb_uid_to_user_rid(smb_pw->smb_userid) != rid) )
1399 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
1402 /* did we locate the username in smbpasswd */
1406 DEBUG(10, ("getsampwrid (smbpasswd): found by name: %s\n", smb_pw->smb_name));
1409 DEBUG(10,("getsampwrid: (smbpasswd) SAM_ACCOUNT is NULL\n"));
1411 smb_panic("NULL pointer passed to pdb_getsampwrid\n");
1416 /* now build the SAM_ACCOUNT */
1417 if (!build_sam_account (smbpasswd_state, sam_acct, smb_pw))
1424 static BOOL smbpasswd_getsampwsid(struct pdb_methods *my_methods, SAM_ACCOUNT * user, DOM_SID *sid)
1427 if (!sid_peek_check_rid(get_global_sam_sid(), sid, &rid))
1429 return smbpasswd_getsampwrid(my_methods, user, rid);
1432 static BOOL smbpasswd_add_sam_account(struct pdb_methods *my_methods, SAM_ACCOUNT *sampass)
1434 struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
1435 struct smb_passwd smb_pw;
1437 /* convert the SAM_ACCOUNT */
1438 if (!build_smb_pass(&smb_pw, sampass)) {
1443 if(!add_smbfilepwd_entry(smbpasswd_state, &smb_pw)) {
1450 static BOOL smbpasswd_update_sam_account(struct pdb_methods *my_methods, SAM_ACCOUNT *sampass)
1452 struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
1453 struct smb_passwd smb_pw;
1455 /* convert the SAM_ACCOUNT */
1456 if (!build_smb_pass(&smb_pw, sampass)) {
1457 DEBUG(0, ("smbpasswd_update_sam_account: build_smb_pass failed!\n"));
1461 /* update the entry */
1462 if(!mod_smbfilepwd_entry(smbpasswd_state, &smb_pw)) {
1463 DEBUG(0, ("smbpasswd_update_sam_account: mod_smbfilepwd_entry failed!\n"));
1470 static BOOL smbpasswd_delete_sam_account (struct pdb_methods *my_methods, SAM_ACCOUNT *sampass)
1472 struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
1474 const char *username = pdb_get_username(sampass);
1476 return del_smbfilepwd_entry(smbpasswd_state, username);
1479 static void free_private_data(void **vp)
1481 struct smbpasswd_privates **privates = (struct smbpasswd_privates**)vp;
1483 endsmbfilepwent((*privates)->pw_file, &((*privates)->pw_file_lock_depth));
1486 /* No need to free any further, as it is talloc()ed */
1490 NTSTATUS pdb_init_smbpasswd(PDB_CONTEXT *pdb_context, PDB_METHODS **pdb_method, const char *location)
1493 struct smbpasswd_privates *privates;
1495 if (!NT_STATUS_IS_OK(nt_status = make_pdb_methods(pdb_context->mem_ctx, pdb_method))) {
1499 (*pdb_method)->name = "smbpasswd";
1501 (*pdb_method)->setsampwent = smbpasswd_setsampwent;
1502 (*pdb_method)->endsampwent = smbpasswd_endsampwent;
1503 (*pdb_method)->getsampwent = smbpasswd_getsampwent;
1504 (*pdb_method)->getsampwnam = smbpasswd_getsampwnam;
1505 (*pdb_method)->getsampwsid = smbpasswd_getsampwsid;
1506 (*pdb_method)->add_sam_account = smbpasswd_add_sam_account;
1507 (*pdb_method)->update_sam_account = smbpasswd_update_sam_account;
1508 (*pdb_method)->delete_sam_account = smbpasswd_delete_sam_account;
1510 /* Setup private data and free function */
1512 privates = talloc_zero(pdb_context->mem_ctx, sizeof(struct smbpasswd_privates));
1515 DEBUG(0, ("talloc() failed for smbpasswd private_data!\n"));
1516 return NT_STATUS_NO_MEMORY;
1519 /* Store some config details */
1522 privates->smbpasswd_file = talloc_strdup(pdb_context->mem_ctx, location);
1524 privates->smbpasswd_file = talloc_strdup(pdb_context->mem_ctx, lp_smb_passwd_file());
1527 if (!privates->smbpasswd_file) {
1528 DEBUG(0, ("talloc_strdp() failed for storing smbpasswd location!\n"));
1529 return NT_STATUS_NO_MEMORY;
1532 (*pdb_method)->private_data = privates;
1534 (*pdb_method)->free_private_data = free_private_data;
1536 return NT_STATUS_OK;
1539 NTSTATUS pdb_init_smbpasswd_nua(PDB_CONTEXT *pdb_context, PDB_METHODS **pdb_method, const char *location)
1542 struct smbpasswd_privates *privates;
1544 if (!NT_STATUS_IS_OK(nt_status = pdb_init_smbpasswd(pdb_context, pdb_method, location))) {
1548 (*pdb_method)->name = "smbpasswd_nua";
1550 privates = (*pdb_method)->private_data;
1552 privates->permit_non_unix_accounts = True;
1554 if (!lp_non_unix_account_range(&privates->low_nua_userid, &privates->high_nua_userid)) {
1555 DEBUG(0, ("cannot use smbpasswd_nua without 'non unix account range' in smb.conf!\n"));
1556 return NT_STATUS_UNSUCCESSFUL;
1559 return NT_STATUS_OK;