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 2000-2001,2003
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 uint32 smb_userid; /* this is actually the unix uid_t */
38 const char *smb_name; /* username string */
40 const unsigned char *smb_passwd; /* Null if no password */
41 const unsigned char *smb_nt_passwd; /* Null if no password */
43 uint16 acct_ctrl; /* account info (ACB_xxxx bit-mask) */
44 time_t pass_last_set_time; /* password last set time */
47 struct smbpasswd_privates
49 /* used for maintain locks on the smbpasswd file */
50 int pw_file_lock_depth;
52 /* Global File pointer */
55 /* formerly static variables */
56 struct smb_passwd pw_buf;
58 unsigned char smbpwd[16];
59 unsigned char smbntpwd[16];
61 /* retrive-once info */
62 const char *smbpasswd_file;
65 enum pwf_access_type { PWF_READ, PWF_UPDATE, PWF_CREATE };
67 /***************************************************************
68 Lock an fd. Abandon after waitsecs seconds.
69 ****************************************************************/
71 static BOOL pw_file_lock(int fd, int type, int secs, int *plock_depth)
76 if(*plock_depth == 0) {
77 if (!do_file_lock(fd, secs, type)) {
78 DEBUG(10,("pw_file_lock: locking file failed, error = %s.\n",
89 /***************************************************************
90 Unlock an fd. Abandon after waitsecs seconds.
91 ****************************************************************/
93 static BOOL pw_file_unlock(int fd, int *plock_depth)
97 if (fd == 0 || *plock_depth == 0) {
101 if(*plock_depth == 1)
102 ret = do_file_lock(fd, 5, F_UNLCK);
104 if (*plock_depth > 0)
108 DEBUG(10,("pw_file_unlock: unlocking file failed, error = %s.\n",
114 /**************************************************************
115 Intialize a smb_passwd struct
116 *************************************************************/
118 static void pdb_init_smb(struct smb_passwd *user)
124 user->pass_last_set_time = (time_t)0;
127 /***************************************************************
128 Internal fn to enumerate the smbpasswd list. Returns a void pointer
129 to ensure no modification outside this module. Checks for atomic
130 rename of smbpasswd file on update or create once the lock has
131 been granted to prevent race conditions. JRA.
132 ****************************************************************/
134 static FILE *startsmbfilepwent(const char *pfile, enum pwf_access_type type, int *lock_depth)
137 const char *open_mode = NULL;
139 int lock_type = F_RDLCK;
142 DEBUG(0, ("startsmbfilepwent: No SMB password file set\n"));
157 * Ensure atomic file creation.
162 for(i = 0; i < 5; i++) {
163 if((fd = sys_open(pfile, O_CREAT|O_TRUNC|O_EXCL|O_RDWR, 0600))!=-1)
165 sys_usleep(200); /* Spin, spin... */
168 DEBUG(0,("startsmbfilepwent_internal: too many race conditions creating file %s\n", pfile));
178 for(race_loop = 0; race_loop < 5; race_loop++) {
179 DEBUG(10, ("startsmbfilepwent_internal: opening file %s\n", pfile));
181 if((fp = sys_fopen(pfile, open_mode)) == NULL) {
184 * If smbpasswd file doesn't exist, then create new one. This helps to avoid
185 * confusing error msg when adding user account first time.
187 if (errno == ENOENT) {
188 if ((fp = sys_fopen(pfile, "a+")) != NULL) {
189 DEBUG(0, ("startsmbfilepwent_internal: file %s did not exist. File successfully created.\n", pfile));
192 DEBUG(0, ("startsmbfilepwent_internal: file %s did not exist. Couldn't create new one. Error was: %s",
193 pfile, strerror(errno)));
198 DEBUG(0, ("startsmbfilepwent_internal: unable to open file %s. Error was: %s\n", pfile, strerror(errno)));
203 if (!pw_file_lock(fileno(fp), lock_type, 5, lock_depth)) {
204 DEBUG(0, ("startsmbfilepwent_internal: unable to lock file %s. Error was %s\n", pfile, strerror(errno) ));
210 * Only check for replacement races on update or create.
211 * For read we don't mind if the data is one record out of date.
214 if(type == PWF_READ) {
217 SMB_STRUCT_STAT sbuf1, sbuf2;
220 * Avoid the potential race condition between the open and the lock
221 * by doing a stat on the filename and an fstat on the fd. If the
222 * two inodes differ then someone did a rename between the open and
223 * the lock. Back off and try the open again. Only do this 5 times to
224 * prevent infinate loops. JRA.
227 if (sys_stat(pfile,&sbuf1) != 0) {
228 DEBUG(0, ("startsmbfilepwent_internal: unable to stat file %s. Error was %s\n", pfile, strerror(errno)));
229 pw_file_unlock(fileno(fp), lock_depth);
234 if (sys_fstat(fileno(fp),&sbuf2) != 0) {
235 DEBUG(0, ("startsmbfilepwent_internal: unable to fstat file %s. Error was %s\n", pfile, strerror(errno)));
236 pw_file_unlock(fileno(fp), lock_depth);
241 if( sbuf1.st_ino == sbuf2.st_ino) {
247 * Race occurred - back off and try again...
250 pw_file_unlock(fileno(fp), lock_depth);
256 DEBUG(0, ("startsmbfilepwent_internal: too many race conditions opening file %s\n", pfile));
260 /* Set a buffer to do more efficient reads */
261 setvbuf(fp, (char *)NULL, _IOFBF, 1024);
263 /* Make sure it is only rw by the owner */
265 if(fchmod(fileno(fp), S_IRUSR|S_IWUSR) == -1) {
267 if(chmod(pfile, S_IRUSR|S_IWUSR) == -1) {
269 DEBUG(0, ("startsmbfilepwent_internal: failed to set 0600 permissions on password file %s. \
270 Error was %s\n.", pfile, strerror(errno) ));
271 pw_file_unlock(fileno(fp), lock_depth);
276 /* We have a lock on the file. */
280 /***************************************************************
281 End enumeration of the smbpasswd list.
282 ****************************************************************/
283 static void endsmbfilepwent(FILE *fp, int *lock_depth)
289 pw_file_unlock(fileno(fp), lock_depth);
291 DEBUG(7, ("endsmbfilepwent_internal: closed password file.\n"));
294 /*************************************************************************
295 Routine to return the next entry in the smbpasswd list.
296 *************************************************************************/
298 static struct smb_passwd *getsmbfilepwent(struct smbpasswd_privates *smbpasswd_state, FILE *fp)
300 /* Static buffers we will return. */
301 struct smb_passwd *pw_buf = &smbpasswd_state->pw_buf;
302 char *user_name = smbpasswd_state->user_name;
303 unsigned char *smbpwd = smbpasswd_state->smbpwd;
304 unsigned char *smbntpwd = smbpasswd_state->smbntpwd;
312 DEBUG(0,("getsmbfilepwent: Bad password file pointer.\n"));
316 pdb_init_smb(pw_buf);
318 pw_buf->acct_ctrl = ACB_NORMAL;
321 * Scan the file, a line at a time and check if the name matches.
326 fgets(linebuf, 256, fp);
332 * Check if the string is terminated with a newline - if not
333 * then we must keep reading and discard until we get one.
335 if ((linebuf_len = strlen(linebuf)) == 0)
338 if (linebuf[linebuf_len - 1] != '\n') {
340 while (!ferror(fp) && !feof(fp)) {
346 linebuf[linebuf_len - 1] = '\0';
348 #ifdef DEBUG_PASSWORD
349 DEBUG(100, ("getsmbfilepwent: got line |%s|\n", linebuf));
351 if ((linebuf[0] == 0) && feof(fp)) {
352 DEBUG(4, ("getsmbfilepwent: end of file reached\n"));
356 * The line we have should be of the form :-
358 * username:uid:32hex bytes:[Account type]:LCT-12345678....other flags presently
363 * username:uid:32hex bytes:32hex bytes:[Account type]:LCT-12345678....ignored....
365 * if Windows NT compatible passwords are also present.
366 * [Account type] is an ascii encoding of the type of account.
367 * LCT-(8 hex digits) is the time_t value of the last change time.
370 if (linebuf[0] == '#' || linebuf[0] == '\0') {
371 DEBUG(6, ("getsmbfilepwent: skipping comment or blank line\n"));
374 p = (unsigned char *) strchr_m(linebuf, ':');
376 DEBUG(0, ("getsmbfilepwent: malformed password entry (no :)\n"));
380 * As 256 is shorter than a pstring we don't need to check
381 * length here - if this ever changes....
383 SMB_ASSERT(sizeof(pstring) > sizeof(linebuf));
385 strncpy(user_name, linebuf, PTR_DIFF(p, linebuf));
386 user_name[PTR_DIFF(p, linebuf)] = '\0';
390 p++; /* Go past ':' */
393 DEBUG(0, ("getsmbfilepwent: uids in the smbpasswd file must not be negative.\n"));
398 DEBUG(0, ("getsmbfilepwent: malformed password entry (uid not number)\n"));
402 uidval = atoi((char *) p);
404 while (*p && isdigit(*p))
408 DEBUG(0, ("getsmbfilepwent: malformed password entry (no : after uid)\n"));
412 pw_buf->smb_name = user_name;
413 pw_buf->smb_userid = uidval;
416 * Now get the password value - this should be 32 hex digits
417 * which are the ascii representations of a 16 byte string.
418 * Get two at a time and put them into the password.
424 if (linebuf_len < (PTR_DIFF(p, linebuf) + 33)) {
425 DEBUG(0, ("getsmbfilepwent: malformed password entry (passwd too short)\n"));
430 DEBUG(0, ("getsmbfilepwent: malformed password entry (no terminating :)\n"));
434 if (strnequal((char *) p, "NO PASSWORD", 11)) {
435 pw_buf->smb_passwd = NULL;
436 pw_buf->acct_ctrl |= ACB_PWNOTREQ;
438 if (*p == '*' || *p == 'X') {
439 /* NULL LM password */
440 pw_buf->smb_passwd = NULL;
441 DEBUG(10, ("getsmbfilepwent: LM password for user %s invalidated\n", user_name));
442 } else if (pdb_gethexpwd((char *)p, smbpwd)) {
443 pw_buf->smb_passwd = smbpwd;
445 pw_buf->smb_passwd = NULL;
446 DEBUG(0, ("getsmbfilepwent: Malformed Lanman password entry (non hex chars)\n"));
451 * Now check if the NT compatible password is
454 pw_buf->smb_nt_passwd = NULL;
456 p += 33; /* Move to the first character of the line after
457 the lanman password. */
458 if ((linebuf_len >= (PTR_DIFF(p, linebuf) + 33)) && (p[32] == ':')) {
459 if (*p != '*' && *p != 'X') {
460 if(pdb_gethexpwd((char *)p,smbntpwd))
461 pw_buf->smb_nt_passwd = smbntpwd;
463 p += 33; /* Move to the first character of the line after
467 DEBUG(5,("getsmbfilepwent: returning passwd entry for user %s, uid %ld\n",
472 unsigned char *end_p = (unsigned char *)strchr_m((char *)p, ']');
473 pw_buf->acct_ctrl = pdb_decode_acct_ctrl((char*)p);
475 /* Must have some account type set. */
476 if(pw_buf->acct_ctrl == 0)
477 pw_buf->acct_ctrl = ACB_NORMAL;
479 /* Now try and get the last change time. */
484 if(*p && (StrnCaseCmp((char *)p, "LCT-", 4)==0)) {
487 for(i = 0; i < 8; i++) {
488 if(p[i] == '\0' || !isxdigit(p[i]))
493 * p points at 8 characters of hex digits -
494 * read into a time_t as the seconds since
495 * 1970 that the password was last changed.
497 pw_buf->pass_last_set_time = (time_t)strtol((char *)p, NULL, 16);
502 /* 'Old' style file. Fake up based on user name. */
504 * Currently trust accounts are kept in the same
505 * password file as 'normal accounts'. If this changes
506 * we will have to fix this code. JRA.
508 if(pw_buf->smb_name[strlen(pw_buf->smb_name) - 1] == '$') {
509 pw_buf->acct_ctrl &= ~ACB_NORMAL;
510 pw_buf->acct_ctrl |= ACB_WSTRUST;
517 DEBUG(5,("getsmbfilepwent: end of file reached.\n"));
521 /************************************************************************
522 Create a new smbpasswd entry - malloced space returned.
523 *************************************************************************/
525 static char *format_new_smbpasswd_entry(const struct smb_passwd *newpwd)
527 int new_entry_length;
531 new_entry_length = strlen(newpwd->smb_name) + 1 + 15 + 1 + 32 + 1 + 32 + 1 + NEW_PW_FORMAT_SPACE_PADDED_LEN + 1 + 13 + 2;
533 if((new_entry = (char *)malloc( new_entry_length )) == NULL) {
534 DEBUG(0, ("format_new_smbpasswd_entry: Malloc failed adding entry for user %s.\n", newpwd->smb_name ));
538 slprintf(new_entry, new_entry_length - 1, "%s:%u:", newpwd->smb_name, (unsigned)newpwd->smb_userid);
540 p = new_entry+strlen(new_entry);
542 pdb_sethexpwd(p, newpwd->smb_passwd, newpwd->acct_ctrl);
544 p+=strlen(p); *p = ':'; p++;
546 pdb_sethexpwd(p, newpwd->smb_nt_passwd, newpwd->acct_ctrl);
548 p+=strlen(p); *p = ':'; p++;
550 /* Add the account encoding and the last change time. */
551 slprintf((char *)p, new_entry_length - 1 - (p - new_entry), "%s:LCT-%08X:\n",
552 pdb_encode_acct_ctrl(newpwd->acct_ctrl, NEW_PW_FORMAT_SPACE_PADDED_LEN),
553 (uint32)newpwd->pass_last_set_time);
558 /************************************************************************
559 Routine to add an entry to the smbpasswd file.
560 *************************************************************************/
562 static BOOL add_smbfilepwd_entry(struct smbpasswd_privates *smbpasswd_state, struct smb_passwd *newpwd)
564 const char *pfile = smbpasswd_state->smbpasswd_file;
565 struct smb_passwd *pwd = NULL;
569 size_t new_entry_length;
572 uint32 max_found_uid = 0;
574 /* Open the smbpassword file - for update. */
575 fp = startsmbfilepwent(pfile, PWF_UPDATE, &(smbpasswd_state->pw_file_lock_depth));
577 if (fp == NULL && errno == ENOENT) {
578 /* Try again - create. */
579 fp = startsmbfilepwent(pfile, PWF_CREATE, &(smbpasswd_state->pw_file_lock_depth));
583 DEBUG(0, ("add_smbfilepwd_entry: unable to open file.\n"));
588 * Scan the file, a line at a time and check if the name matches.
591 while ((pwd = getsmbfilepwent(smbpasswd_state, fp)) != NULL)
593 if (strequal(newpwd->smb_name, pwd->smb_name))
595 DEBUG(0, ("add_smbfilepwd_entry: entry with name %s already exists\n", pwd->smb_name));
596 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
600 /* Look for a free uid for use in non-unix accounts */
601 if (pwd->smb_userid > max_found_uid) {
602 max_found_uid = pwd->smb_userid;
606 /* Ok - entry doesn't exist. We can add it */
608 /* Create a new smb passwd entry and set it to the given password. */
610 * The add user write needs to be atomic - so get the fd from
611 * the fp and do a raw write() call.
615 if((offpos = sys_lseek(fd, 0, SEEK_END)) == -1)
617 DEBUG(0, ("add_smbfilepwd_entry(sys_lseek): Failed to add entry for user %s to file %s. \
618 Error was %s\n", newpwd->smb_name, pfile, strerror(errno)));
619 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
623 if((new_entry = format_new_smbpasswd_entry(newpwd)) == NULL)
625 DEBUG(0, ("add_smbfilepwd_entry(malloc): Failed to add entry for user %s to file %s. \
626 Error was %s\n", newpwd->smb_name, pfile, strerror(errno)));
627 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
631 new_entry_length = strlen(new_entry);
633 #ifdef DEBUG_PASSWORD
634 DEBUG(100, ("add_smbfilepwd_entry(%d): new_entry_len %d made line |%s|",
635 fd, new_entry_length, new_entry));
638 if ((wr_len = write(fd, new_entry, new_entry_length)) != new_entry_length)
640 DEBUG(0, ("add_smbfilepwd_entry(write): %d Failed to add entry for user %s to file %s. \
641 Error was %s\n", wr_len, newpwd->smb_name, pfile, strerror(errno)));
643 /* Remove the entry we just wrote. */
644 if(sys_ftruncate(fd, offpos) == -1)
646 DEBUG(0, ("add_smbfilepwd_entry: ERROR failed to ftruncate file %s. \
647 Error was %s. Password file may be corrupt ! Please examine by hand !\n",
648 newpwd->smb_name, strerror(errno)));
651 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
657 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
661 /************************************************************************
662 Routine to search the smbpasswd file for an entry matching the username.
663 and then modify its password entry. We can't use the startsmbpwent()/
664 getsmbpwent()/endsmbpwent() interfaces here as we depend on looking
665 in the actual file to decide how much room we have to write data.
666 override = False, normal
667 override = True, override XXXXXXXX'd out password or NO PASS
668 ************************************************************************/
670 static BOOL mod_smbfilepwd_entry(struct smbpasswd_privates *smbpasswd_state, const struct smb_passwd* pwd)
672 /* Static buffers we will return. */
680 unsigned char *p = NULL;
681 size_t linebuf_len = 0;
684 const char *pfile = smbpasswd_state->smbpasswd_file;
685 BOOL found_entry = False;
686 BOOL got_pass_last_set_time = False;
688 SMB_OFF_T pwd_seekpos = 0;
695 DEBUG(0, ("No SMB password file set\n"));
698 DEBUG(10, ("mod_smbfilepwd_entry: opening file %s\n", pfile));
700 fp = sys_fopen(pfile, "r+");
703 DEBUG(0, ("mod_smbfilepwd_entry: unable to open file %s\n", pfile));
706 /* Set a buffer to do more efficient reads */
707 setvbuf(fp, readbuf, _IOFBF, sizeof(readbuf));
711 if (!pw_file_lock(lockfd, F_WRLCK, 5, &(smbpasswd_state->pw_file_lock_depth))) {
712 DEBUG(0, ("mod_smbfilepwd_entry: unable to lock file %s\n", pfile));
717 /* Make sure it is only rw by the owner */
720 /* We have a write lock on the file. */
722 * Scan the file, a line at a time and check if the name matches.
725 pwd_seekpos = sys_ftell(fp);
729 fgets(linebuf, sizeof(linebuf), fp);
731 pw_file_unlock(lockfd, &(smbpasswd_state->pw_file_lock_depth));
737 * Check if the string is terminated with a newline - if not
738 * then we must keep reading and discard until we get one.
740 linebuf_len = strlen(linebuf);
741 if (linebuf[linebuf_len - 1] != '\n') {
743 while (!ferror(fp) && !feof(fp)) {
750 linebuf[linebuf_len - 1] = '\0';
753 #ifdef DEBUG_PASSWORD
754 DEBUG(100, ("mod_smbfilepwd_entry: got line |%s|\n", linebuf));
757 if ((linebuf[0] == 0) && feof(fp)) {
758 DEBUG(4, ("mod_smbfilepwd_entry: end of file reached\n"));
763 * The line we have should be of the form :-
765 * username:uid:[32hex bytes]:....other flags presently
770 * username:uid:[32hex bytes]:[32hex bytes]:[attributes]:LCT-XXXXXXXX:...ignored.
772 * if Windows NT compatible passwords are also present.
775 if (linebuf[0] == '#' || linebuf[0] == '\0') {
776 DEBUG(6, ("mod_smbfilepwd_entry: skipping comment or blank line\n"));
780 p = (unsigned char *) strchr_m(linebuf, ':');
783 DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (no :)\n"));
788 * As 256 is shorter than a pstring we don't need to check
789 * length here - if this ever changes....
792 SMB_ASSERT(sizeof(user_name) > sizeof(linebuf));
794 strncpy(user_name, linebuf, PTR_DIFF(p, linebuf));
795 user_name[PTR_DIFF(p, linebuf)] = '\0';
796 if (strequal(user_name, pwd->smb_name)) {
803 pw_file_unlock(lockfd, &(smbpasswd_state->pw_file_lock_depth));
806 DEBUG(2, ("Cannot update entry for user %s, as they don't exist in the smbpasswd file!\n",
811 DEBUG(6, ("mod_smbfilepwd_entry: entry exists\n"));
813 /* User name matches - get uid and password */
814 p++; /* Go past ':' */
817 DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (uid not number)\n"));
818 pw_file_unlock(lockfd, &(smbpasswd_state->pw_file_lock_depth));
823 while (*p && isdigit(*p))
826 DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (no : after uid)\n"));
827 pw_file_unlock(lockfd, &(smbpasswd_state->pw_file_lock_depth));
833 * Now get the password value - this should be 32 hex digits
834 * which are the ascii representations of a 16 byte string.
835 * Get two at a time and put them into the password.
839 /* Record exact password position */
840 pwd_seekpos += PTR_DIFF(p, linebuf);
842 if (linebuf_len < (PTR_DIFF(p, linebuf) + 33)) {
843 DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (passwd too short)\n"));
844 pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth));
850 DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (no terminating :)\n"));
851 pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth));
856 /* Now check if the NT compatible password is
858 p += 33; /* Move to the first character of the line after
859 the lanman password. */
860 if (linebuf_len < (PTR_DIFF(p, linebuf) + 33)) {
861 DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (passwd too short)\n"));
862 pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth));
868 DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (no terminating :)\n"));
869 pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth));
875 * Now check if the account info and the password last
876 * change time is available.
878 p += 33; /* Move to the first character of the line after
884 encode_bits[i++] = *p++;
885 while((linebuf_len > PTR_DIFF(p, linebuf)) && (*p != ']'))
886 encode_bits[i++] = *p++;
888 encode_bits[i++] = ']';
889 encode_bits[i++] = '\0';
891 if(i == NEW_PW_FORMAT_SPACE_PADDED_LEN) {
893 * We are using a new format, space padded
894 * acct ctrl field. Encode the given acct ctrl
897 fstrcpy(encode_bits, pdb_encode_acct_ctrl(pwd->acct_ctrl, NEW_PW_FORMAT_SPACE_PADDED_LEN));
899 DEBUG(0,("mod_smbfilepwd_entry: Using old smbpasswd format. This is no longer supported.!\n"));
900 DEBUG(0,("mod_smbfilepwd_entry: No changes made, failing.!\n"));
901 pw_file_unlock(lockfd, &(smbpasswd_state->pw_file_lock_depth));
906 /* Go past the ']' */
907 if(linebuf_len > PTR_DIFF(p, linebuf))
910 if((linebuf_len > PTR_DIFF(p, linebuf)) && (*p == ':')) {
913 /* We should be pointing at the LCT entry. */
914 if((linebuf_len > (PTR_DIFF(p, linebuf) + 13)) && (StrnCaseCmp((char *)p, "LCT-", 4) == 0)) {
917 for(i = 0; i < 8; i++) {
918 if(p[i] == '\0' || !isxdigit(p[i]))
923 * p points at 8 characters of hex digits -
924 * read into a time_t as the seconds since
925 * 1970 that the password was last changed.
927 got_pass_last_set_time = True;
929 } /* *p && StrnCaseCmp() */
933 /* Entry is correctly formed. */
935 /* Create the 32 byte representation of the new p16 */
936 pdb_sethexpwd(ascii_p16, pwd->smb_passwd, pwd->acct_ctrl);
938 /* Add on the NT md4 hash */
941 pdb_sethexpwd(ascii_p16+33, pwd->smb_nt_passwd, pwd->acct_ctrl);
943 ascii_p16[66] = '\0'; /* null-terminate the string so that strlen works */
945 /* Add on the account info bits and the time of last
948 if(got_pass_last_set_time) {
949 slprintf(&ascii_p16[strlen(ascii_p16)],
950 sizeof(ascii_p16)-(strlen(ascii_p16)+1),
952 encode_bits, (uint32)pwd->pass_last_set_time );
953 wr_len = strlen(ascii_p16);
956 #ifdef DEBUG_PASSWORD
957 DEBUG(100,("mod_smbfilepwd_entry: "));
958 dump_data(100, ascii_p16, wr_len);
961 if(wr_len > sizeof(linebuf)) {
962 DEBUG(0, ("mod_smbfilepwd_entry: line to write (%d) is too long.\n", wr_len+1));
963 pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth));
969 * Do an atomic write into the file at the position defined by
973 /* The mod user write needs to be atomic - so get the fd from
974 the fp and do a raw write() call.
979 if (sys_lseek(fd, pwd_seekpos - 1, SEEK_SET) != pwd_seekpos - 1) {
980 DEBUG(0, ("mod_smbfilepwd_entry: seek fail on file %s.\n", pfile));
981 pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth));
986 /* Sanity check - ensure the areas we are writing are framed by ':' */
987 if (read(fd, linebuf, wr_len+1) != wr_len+1) {
988 DEBUG(0, ("mod_smbfilepwd_entry: read fail on file %s.\n", pfile));
989 pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth));
994 if ((linebuf[0] != ':') || (linebuf[wr_len] != ':')) {
995 DEBUG(0, ("mod_smbfilepwd_entry: check on passwd file %s failed.\n", pfile));
996 pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth));
1001 if (sys_lseek(fd, pwd_seekpos, SEEK_SET) != pwd_seekpos) {
1002 DEBUG(0, ("mod_smbfilepwd_entry: seek fail on file %s.\n", pfile));
1003 pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth));
1008 if (write(fd, ascii_p16, wr_len) != wr_len) {
1009 DEBUG(0, ("mod_smbfilepwd_entry: write failed in passwd file %s\n", pfile));
1010 pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth));
1015 pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth));
1020 /************************************************************************
1021 Routine to delete an entry in the smbpasswd file by name.
1022 *************************************************************************/
1024 static BOOL del_smbfilepwd_entry(struct smbpasswd_privates *smbpasswd_state, const char *name)
1026 const char *pfile = smbpasswd_state->smbpasswd_file;
1028 struct smb_passwd *pwd = NULL;
1030 FILE *fp_write = NULL;
1031 int pfile2_lockdepth = 0;
1033 slprintf(pfile2, sizeof(pfile2)-1, "%s.%u", pfile, (unsigned)sys_getpid() );
1036 * Open the smbpassword file - for update. It needs to be update
1037 * as we need any other processes to wait until we have replaced
1041 if((fp = startsmbfilepwent(pfile, PWF_UPDATE, &(smbpasswd_state->pw_file_lock_depth))) == NULL) {
1042 DEBUG(0, ("del_smbfilepwd_entry: unable to open file %s.\n", pfile));
1047 * Create the replacement password file.
1049 if((fp_write = startsmbfilepwent(pfile2, PWF_CREATE, &pfile2_lockdepth)) == NULL) {
1050 DEBUG(0, ("del_smbfilepwd_entry: unable to open file %s.\n", pfile));
1051 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
1056 * Scan the file, a line at a time and check if the name matches.
1059 while ((pwd = getsmbfilepwent(smbpasswd_state, fp)) != NULL) {
1061 size_t new_entry_length;
1063 if (strequal(name, pwd->smb_name)) {
1064 DEBUG(10, ("add_smbfilepwd_entry: found entry with name %s - deleting it.\n", name));
1069 * We need to copy the entry out into the second file.
1072 if((new_entry = format_new_smbpasswd_entry(pwd)) == NULL)
1074 DEBUG(0, ("del_smbfilepwd_entry(malloc): Failed to copy entry for user %s to file %s. \
1075 Error was %s\n", pwd->smb_name, pfile2, strerror(errno)));
1077 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
1078 endsmbfilepwent(fp_write, &pfile2_lockdepth);
1082 new_entry_length = strlen(new_entry);
1084 if(fwrite(new_entry, 1, new_entry_length, fp_write) != new_entry_length)
1086 DEBUG(0, ("del_smbfilepwd_entry(write): Failed to copy entry for user %s to file %s. \
1087 Error was %s\n", pwd->smb_name, pfile2, strerror(errno)));
1089 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
1090 endsmbfilepwent(fp_write, &pfile2_lockdepth);
1099 * Ensure pfile2 is flushed before rename.
1102 if(fflush(fp_write) != 0)
1104 DEBUG(0, ("del_smbfilepwd_entry: Failed to flush file %s. Error was %s\n", pfile2, strerror(errno)));
1105 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
1106 endsmbfilepwent(fp_write,&pfile2_lockdepth);
1111 * Do an atomic rename - then release the locks.
1114 if(rename(pfile2,pfile) != 0) {
1118 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
1119 endsmbfilepwent(fp_write,&pfile2_lockdepth);
1123 /*********************************************************************
1124 Create a smb_passwd struct from a SAM_ACCOUNT.
1125 We will not allocate any new memory. The smb_passwd struct
1126 should only stay around as long as the SAM_ACCOUNT does.
1127 ********************************************************************/
1128 static BOOL build_smb_pass (struct smb_passwd *smb_pw, const SAM_ACCOUNT *sampass)
1132 if (sampass == NULL)
1134 ZERO_STRUCTP(smb_pw);
1136 if (!IS_SAM_DEFAULT(sampass, PDB_USERSID)) {
1137 rid = pdb_get_user_rid(sampass);
1139 /* If the user specified a RID, make sure its able to be both stored and retreived */
1140 if (rid == DOMAIN_USER_RID_GUEST) {
1141 struct passwd *passwd = getpwnam_alloc(lp_guestaccount());
1143 DEBUG(0, ("Could not find gest account via getpwnam()! (%s)\n", lp_guestaccount()));
1146 smb_pw->smb_userid=passwd->pw_uid;
1147 passwd_free(&passwd);
1149 } else if (algorithmic_pdb_rid_is_user(rid)) {
1150 smb_pw->smb_userid=algorithmic_pdb_user_rid_to_uid(rid);
1152 DEBUG(0,("build_sam_pass: Failing attempt to store user with non-uid based user RID. \n"));
1157 smb_pw->smb_name=(const char*)pdb_get_username(sampass);
1159 smb_pw->smb_passwd=pdb_get_lanman_passwd(sampass);
1160 smb_pw->smb_nt_passwd=pdb_get_nt_passwd(sampass);
1162 smb_pw->acct_ctrl=pdb_get_acct_ctrl(sampass);
1163 smb_pw->pass_last_set_time=pdb_get_pass_last_set_time(sampass);
1168 /*********************************************************************
1169 Create a SAM_ACCOUNT from a smb_passwd struct
1170 ********************************************************************/
1171 static BOOL build_sam_account(struct smbpasswd_privates *smbpasswd_state,
1172 SAM_ACCOUNT *sam_pass, const struct smb_passwd *pw_buf)
1174 struct passwd *pwfile;
1176 if (sam_pass==NULL) {
1177 DEBUG(5,("build_sam_account: SAM_ACCOUNT is NULL\n"));
1181 /* verify the user account exists */
1183 if ( !(pwfile = getpwnam_alloc(pw_buf->smb_name)) ) {
1184 DEBUG(0,("build_sam_account: smbpasswd database is corrupt! username %s with uid "
1185 "%u is not in unix passwd database!\n", pw_buf->smb_name, pw_buf->smb_userid));
1189 if (!NT_STATUS_IS_OK(pdb_fill_sam_pw(sam_pass, pwfile)))
1192 passwd_free(&pwfile);
1194 /* set remaining fields */
1196 pdb_set_nt_passwd (sam_pass, pw_buf->smb_nt_passwd, PDB_SET);
1197 pdb_set_lanman_passwd (sam_pass, pw_buf->smb_passwd, PDB_SET);
1198 pdb_set_acct_ctrl (sam_pass, pw_buf->acct_ctrl, PDB_SET);
1199 pdb_set_pass_last_set_time (sam_pass, pw_buf->pass_last_set_time, PDB_SET);
1200 pdb_set_pass_can_change_time (sam_pass, pw_buf->pass_last_set_time, PDB_SET);
1205 /*****************************************************************
1206 Functions to be implemented by the new passdb API
1207 ****************************************************************/
1208 static NTSTATUS smbpasswd_setsampwent (struct pdb_methods *my_methods, BOOL update)
1210 struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
1212 smbpasswd_state->pw_file = startsmbfilepwent(smbpasswd_state->smbpasswd_file,
1213 update ? PWF_UPDATE : PWF_READ,
1214 &(smbpasswd_state->pw_file_lock_depth));
1216 /* did we fail? Should we try to create it? */
1217 if (!smbpasswd_state->pw_file && update && errno == ENOENT)
1220 /* slprintf(msg_str,msg_str_len-1,
1221 "smbpasswd file did not exist - attempting to create it.\n"); */
1222 DEBUG(0,("smbpasswd file did not exist - attempting to create it.\n"));
1223 fp = sys_fopen(smbpasswd_state->smbpasswd_file, "w");
1226 fprintf(fp, "# Samba SMB password file\n");
1230 smbpasswd_state->pw_file = startsmbfilepwent(smbpasswd_state->smbpasswd_file,
1231 update ? PWF_UPDATE : PWF_READ,
1232 &(smbpasswd_state->pw_file_lock_depth));
1235 if (smbpasswd_state->pw_file != NULL)
1236 return NT_STATUS_OK;
1238 return NT_STATUS_UNSUCCESSFUL;
1241 static void smbpasswd_endsampwent (struct pdb_methods *my_methods)
1243 struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
1244 endsmbfilepwent(smbpasswd_state->pw_file, &(smbpasswd_state->pw_file_lock_depth));
1247 /*****************************************************************
1248 ****************************************************************/
1249 static NTSTATUS smbpasswd_getsampwent(struct pdb_methods *my_methods, SAM_ACCOUNT *user)
1251 NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
1252 struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
1253 struct smb_passwd *pw_buf=NULL;
1255 DEBUG(5,("pdb_getsampwent\n"));
1258 DEBUG(5,("pdb_getsampwent (smbpasswd): user is NULL\n"));
1260 smb_panic("NULL pointer passed to getsampwent (smbpasswd)\n");
1267 /* do we have an entry? */
1268 pw_buf = getsmbfilepwent(smbpasswd_state, smbpasswd_state->pw_file);
1272 /* build the SAM_ACCOUNT entry from the smb_passwd struct.
1273 We loop in case the user in the pdb does not exist in
1274 the local system password file */
1275 if (build_sam_account(smbpasswd_state, user, pw_buf))
1279 DEBUG(5,("getsampwent (smbpasswd): done\n"));
1282 return NT_STATUS_OK;
1286 /****************************************************************
1287 Search smbpasswd file by iterating over the entries. Do not
1288 call getpwnam() for unix account information until we have found
1290 ***************************************************************/
1291 static NTSTATUS smbpasswd_getsampwnam(struct pdb_methods *my_methods,
1292 SAM_ACCOUNT *sam_acct, const char *username)
1294 NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
1295 struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
1296 struct smb_passwd *smb_pw;
1299 DEBUG(10, ("getsampwnam (smbpasswd): search by name: %s\n", username));
1301 /* startsmbfilepwent() is used here as we don't want to lookup
1302 the UNIX account in the local system password file until
1304 fp = startsmbfilepwent(smbpasswd_state->smbpasswd_file, PWF_READ, &(smbpasswd_state->pw_file_lock_depth));
1307 DEBUG(0, ("Unable to open passdb database.\n"));
1311 while ( ((smb_pw=getsmbfilepwent(smbpasswd_state, fp)) != NULL)&& (!strequal(smb_pw->smb_name, username)) )
1312 /* do nothing....another loop */ ;
1314 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
1317 /* did we locate the username in smbpasswd */
1321 DEBUG(10, ("getsampwnam (smbpasswd): found by name: %s\n", smb_pw->smb_name));
1324 DEBUG(10,("getsampwnam (smbpasswd): SAM_ACCOUNT is NULL\n"));
1326 smb_panic("NULL pointer passed to pdb_getsampwnam\n");
1331 /* now build the SAM_ACCOUNT */
1332 if (!build_sam_account(smbpasswd_state, sam_acct, smb_pw))
1336 return NT_STATUS_OK;
1339 static NTSTATUS smbpasswd_getsampwsid(struct pdb_methods *my_methods, SAM_ACCOUNT *sam_acct, const DOM_SID *sid)
1341 NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
1342 struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
1343 struct smb_passwd *smb_pw;
1348 DEBUG(10, ("smbpasswd_getsampwrid: search by sid: %s\n", sid_to_string(sid_str, sid)));
1350 if (!sid_peek_check_rid(get_global_sam_sid(), sid, &rid))
1351 return NT_STATUS_UNSUCCESSFUL;
1353 /* More special case 'guest account' hacks... */
1354 if (rid == DOMAIN_USER_RID_GUEST) {
1355 const char *guest_account = lp_guestaccount();
1356 if (!(guest_account && *guest_account)) {
1357 DEBUG(1, ("Guest account not specfied!\n"));
1360 return smbpasswd_getsampwnam(my_methods, sam_acct, guest_account);
1363 /* Open the sam password file - not for update. */
1364 fp = startsmbfilepwent(smbpasswd_state->smbpasswd_file, PWF_READ, &(smbpasswd_state->pw_file_lock_depth));
1367 DEBUG(0, ("Unable to open passdb database.\n"));
1371 while ( ((smb_pw=getsmbfilepwent(smbpasswd_state, fp)) != NULL) && (algorithmic_pdb_uid_to_user_rid(smb_pw->smb_userid) != rid) )
1374 endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
1377 /* did we locate the username in smbpasswd */
1381 DEBUG(10, ("getsampwrid (smbpasswd): found by name: %s\n", smb_pw->smb_name));
1384 DEBUG(10,("getsampwrid: (smbpasswd) SAM_ACCOUNT is NULL\n"));
1386 smb_panic("NULL pointer passed to pdb_getsampwrid\n");
1391 /* now build the SAM_ACCOUNT */
1392 if (!build_sam_account (smbpasswd_state, sam_acct, smb_pw))
1395 /* build_sam_account might change the SID on us, if the name was for the guest account */
1396 if (NT_STATUS_IS_OK(nt_status) && !sid_equal(pdb_get_user_sid(sam_acct), sid)) {
1397 fstring sid_string1, sid_string2;
1398 DEBUG(1, ("looking for user with sid %s instead returned %s for account %s!?!\n",
1399 sid_to_string(sid_string1, sid), sid_to_string(sid_string2, pdb_get_user_sid(sam_acct)), pdb_get_username(sam_acct)));
1400 return NT_STATUS_NO_SUCH_USER;
1404 return NT_STATUS_OK;
1407 static NTSTATUS smbpasswd_add_sam_account(struct pdb_methods *my_methods, SAM_ACCOUNT *sampass)
1409 struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
1410 struct smb_passwd smb_pw;
1412 /* convert the SAM_ACCOUNT */
1413 if (!build_smb_pass(&smb_pw, sampass)) {
1414 return NT_STATUS_UNSUCCESSFUL;
1418 if(!add_smbfilepwd_entry(smbpasswd_state, &smb_pw)) {
1419 return NT_STATUS_UNSUCCESSFUL;
1422 return NT_STATUS_OK;
1425 static NTSTATUS smbpasswd_update_sam_account(struct pdb_methods *my_methods, SAM_ACCOUNT *sampass)
1427 struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
1428 struct smb_passwd smb_pw;
1430 /* convert the SAM_ACCOUNT */
1431 if (!build_smb_pass(&smb_pw, sampass)) {
1432 DEBUG(0, ("smbpasswd_update_sam_account: build_smb_pass failed!\n"));
1433 return NT_STATUS_UNSUCCESSFUL;
1436 /* update the entry */
1437 if(!mod_smbfilepwd_entry(smbpasswd_state, &smb_pw)) {
1438 DEBUG(0, ("smbpasswd_update_sam_account: mod_smbfilepwd_entry failed!\n"));
1439 return NT_STATUS_UNSUCCESSFUL;
1442 return NT_STATUS_OK;
1445 static NTSTATUS smbpasswd_delete_sam_account (struct pdb_methods *my_methods, SAM_ACCOUNT *sampass)
1447 struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
1449 const char *username = pdb_get_username(sampass);
1451 if (del_smbfilepwd_entry(smbpasswd_state, username))
1452 return NT_STATUS_OK;
1454 return NT_STATUS_UNSUCCESSFUL;
1457 static void free_private_data(void **vp)
1459 struct smbpasswd_privates **privates = (struct smbpasswd_privates**)vp;
1461 endsmbfilepwent((*privates)->pw_file, &((*privates)->pw_file_lock_depth));
1464 /* No need to free any further, as it is talloc()ed */
1467 static NTSTATUS pdb_init_smbpasswd(PDB_CONTEXT *pdb_context, PDB_METHODS **pdb_method, const char *location)
1470 struct smbpasswd_privates *privates;
1472 if (!NT_STATUS_IS_OK(nt_status = make_pdb_methods(pdb_context->mem_ctx, pdb_method))) {
1476 (*pdb_method)->name = "smbpasswd";
1478 (*pdb_method)->setsampwent = smbpasswd_setsampwent;
1479 (*pdb_method)->endsampwent = smbpasswd_endsampwent;
1480 (*pdb_method)->getsampwent = smbpasswd_getsampwent;
1481 (*pdb_method)->getsampwnam = smbpasswd_getsampwnam;
1482 (*pdb_method)->getsampwsid = smbpasswd_getsampwsid;
1483 (*pdb_method)->add_sam_account = smbpasswd_add_sam_account;
1484 (*pdb_method)->update_sam_account = smbpasswd_update_sam_account;
1485 (*pdb_method)->delete_sam_account = smbpasswd_delete_sam_account;
1487 /* Setup private data and free function */
1489 privates = talloc_zero(pdb_context->mem_ctx, sizeof(struct smbpasswd_privates));
1492 DEBUG(0, ("talloc() failed for smbpasswd private_data!\n"));
1493 return NT_STATUS_NO_MEMORY;
1496 /* Store some config details */
1499 privates->smbpasswd_file = talloc_strdup(pdb_context->mem_ctx, location);
1501 privates->smbpasswd_file = talloc_strdup(pdb_context->mem_ctx, lp_smb_passwd_file());
1504 if (!privates->smbpasswd_file) {
1505 DEBUG(0, ("talloc_strdp() failed for storing smbpasswd location!\n"));
1506 return NT_STATUS_NO_MEMORY;
1509 (*pdb_method)->private_data = privates;
1511 (*pdb_method)->free_private_data = free_private_data;
1513 return NT_STATUS_OK;
1516 NTSTATUS pdb_smbpasswd_init(void)
1518 return smb_register_passdb(PASSDB_INTERFACE_VERSION, "smbpasswd", pdb_init_smbpasswd);