--- /dev/null
+/*
+ * Unix SMB/CIFS implementation.
+ * SMB parameters and setup
+ * Copyright (C) Andrew Tridgell 1992-1998
+ * Modified by Jeremy Allison 1995.
+ * Modified by Gerald (Jerry) Carter 2000-2001,2003
+ * Modified by Andrew Bartlett 2002.
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 675
+ * Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "includes.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_PASSDB
+
+/*
+ smb_passwd is analogous to sam_passwd used everywhere
+ else. However, smb_passwd is limited to the information
+ stored by an smbpasswd entry
+ */
+
+struct smb_passwd
+{
+ uint32 smb_userid; /* this is actually the unix uid_t */
+ const char *smb_name; /* username string */
+
+ const unsigned char *smb_passwd; /* Null if no password */
+ const unsigned char *smb_nt_passwd; /* Null if no password */
+
+ uint16 acct_ctrl; /* account info (ACB_xxxx bit-mask) */
+ time_t pass_last_set_time; /* password last set time */
+};
+
+struct smbpasswd_privates
+{
+ /* used for maintain locks on the smbpasswd file */
+ int pw_file_lock_depth;
+
+ /* Global File pointer */
+ FILE *pw_file;
+
+ /* formerly static variables */
+ struct smb_passwd pw_buf;
+ pstring user_name;
+ unsigned char smbpwd[16];
+ unsigned char smbntpwd[16];
+
+ /* retrive-once info */
+ const char *smbpasswd_file;
+};
+
+enum pwf_access_type { PWF_READ, PWF_UPDATE, PWF_CREATE };
+
+/***************************************************************
+ Lock an fd. Abandon after waitsecs seconds.
+****************************************************************/
+
+static BOOL pw_file_lock(int fd, int type, int secs, int *plock_depth)
+{
+ if (fd < 0) {
+ return False;
+ }
+
+ if(*plock_depth == 0) {
+ if (!do_file_lock(fd, secs, type)) {
+ DEBUG(10,("pw_file_lock: locking file failed, error = %s.\n",
+ strerror(errno)));
+ return False;
+ }
+ }
+
+ (*plock_depth)++;
+
+ return True;
+}
+
+/***************************************************************
+ Unlock an fd. Abandon after waitsecs seconds.
+****************************************************************/
+
+static BOOL pw_file_unlock(int fd, int *plock_depth)
+{
+ BOOL ret=True;
+
+ if (fd == 0 || *plock_depth == 0) {
+ return True;
+ }
+
+ if(*plock_depth == 1) {
+ ret = do_file_lock(fd, 5, F_UNLCK);
+ }
+
+ if (*plock_depth > 0) {
+ (*plock_depth)--;
+ }
+
+ if(!ret) {
+ DEBUG(10,("pw_file_unlock: unlocking file failed, error = %s.\n",
+ strerror(errno)));
+ }
+ return ret;
+}
+
+/**************************************************************
+ Intialize a smb_passwd struct
+ *************************************************************/
+
+static void pdb_init_smb(struct smb_passwd *user)
+{
+ if (user == NULL)
+ return;
+ ZERO_STRUCTP (user);
+
+ user->pass_last_set_time = (time_t)0;
+}
+
+/***************************************************************
+ Internal fn to enumerate the smbpasswd list. Returns a void pointer
+ to ensure no modification outside this module. Checks for atomic
+ rename of smbpasswd file on update or create once the lock has
+ been granted to prevent race conditions. JRA.
+****************************************************************/
+
+static FILE *startsmbfilepwent(const char *pfile, enum pwf_access_type type, int *lock_depth)
+{
+ FILE *fp = NULL;
+ const char *open_mode = NULL;
+ int race_loop = 0;
+ int lock_type = F_RDLCK;
+
+ if (!*pfile) {
+ DEBUG(0, ("startsmbfilepwent: No SMB password file set\n"));
+ return (NULL);
+ }
+
+ switch(type) {
+ case PWF_READ:
+ open_mode = "rb";
+ lock_type = F_RDLCK;
+ break;
+ case PWF_UPDATE:
+ open_mode = "r+b";
+ lock_type = F_WRLCK;
+ break;
+ case PWF_CREATE:
+ /*
+ * Ensure atomic file creation.
+ */
+ {
+ int i, fd = -1;
+
+ for(i = 0; i < 5; i++) {
+ if((fd = sys_open(pfile, O_CREAT|O_TRUNC|O_EXCL|O_RDWR, 0600))!=-1) {
+ break;
+ }
+ sys_usleep(200); /* Spin, spin... */
+ }
+ if(fd == -1) {
+ DEBUG(0,("startsmbfilepwent_internal: too many race conditions \
+creating file %s\n", pfile));
+ return NULL;
+ }
+ close(fd);
+ open_mode = "r+b";
+ lock_type = F_WRLCK;
+ break;
+ }
+ }
+
+ for(race_loop = 0; race_loop < 5; race_loop++) {
+ DEBUG(10, ("startsmbfilepwent_internal: opening file %s\n", pfile));
+
+ if((fp = sys_fopen(pfile, open_mode)) == NULL) {
+
+ /*
+ * If smbpasswd file doesn't exist, then create new one. This helps to avoid
+ * confusing error msg when adding user account first time.
+ */
+ if (errno == ENOENT) {
+ if ((fp = sys_fopen(pfile, "a+")) != NULL) {
+ DEBUG(0, ("startsmbfilepwent_internal: file %s did not \
+exist. File successfully created.\n", pfile));
+ } else {
+ DEBUG(0, ("startsmbfilepwent_internal: file %s did not \
+exist. Couldn't create new one. Error was: %s",
+ pfile, strerror(errno)));
+ return NULL;
+ }
+ } else {
+ DEBUG(0, ("startsmbfilepwent_internal: unable to open file %s. \
+Error was: %s\n", pfile, strerror(errno)));
+ return NULL;
+ }
+ }
+
+ if (!pw_file_lock(fileno(fp), lock_type, 5, lock_depth)) {
+ DEBUG(0, ("startsmbfilepwent_internal: unable to lock file %s. \
+Error was %s\n", pfile, strerror(errno) ));
+ fclose(fp);
+ return NULL;
+ }
+
+ /*
+ * Only check for replacement races on update or create.
+ * For read we don't mind if the data is one record out of date.
+ */
+
+ if(type == PWF_READ) {
+ break;
+ } else {
+ SMB_STRUCT_STAT sbuf1, sbuf2;
+
+ /*
+ * Avoid the potential race condition between the open and the lock
+ * by doing a stat on the filename and an fstat on the fd. If the
+ * two inodes differ then someone did a rename between the open and
+ * the lock. Back off and try the open again. Only do this 5 times to
+ * prevent infinate loops. JRA.
+ */
+
+ if (sys_stat(pfile,&sbuf1) != 0) {
+ DEBUG(0, ("startsmbfilepwent_internal: unable to stat file %s. \
+Error was %s\n", pfile, strerror(errno)));
+ pw_file_unlock(fileno(fp), lock_depth);
+ fclose(fp);
+ return NULL;
+ }
+
+ if (sys_fstat(fileno(fp),&sbuf2) != 0) {
+ DEBUG(0, ("startsmbfilepwent_internal: unable to fstat file %s. \
+Error was %s\n", pfile, strerror(errno)));
+ pw_file_unlock(fileno(fp), lock_depth);
+ fclose(fp);
+ return NULL;
+ }
+
+ if( sbuf1.st_ino == sbuf2.st_ino) {
+ /* No race. */
+ break;
+ }
+
+ /*
+ * Race occurred - back off and try again...
+ */
+
+ pw_file_unlock(fileno(fp), lock_depth);
+ fclose(fp);
+ }
+ }
+
+ if(race_loop == 5) {
+ DEBUG(0, ("startsmbfilepwent_internal: too many race conditions opening file %s\n", pfile));
+ return NULL;
+ }
+
+ /* Set a buffer to do more efficient reads */
+ setvbuf(fp, (char *)NULL, _IOFBF, 1024);
+
+ /* Make sure it is only rw by the owner */
+#ifdef HAVE_FCHMOD
+ if(fchmod(fileno(fp), S_IRUSR|S_IWUSR) == -1) {
+#else
+ if(chmod(pfile, S_IRUSR|S_IWUSR) == -1) {
+#endif
+ DEBUG(0, ("startsmbfilepwent_internal: failed to set 0600 permissions on password file %s. \
+Error was %s\n.", pfile, strerror(errno) ));
+ pw_file_unlock(fileno(fp), lock_depth);
+ fclose(fp);
+ return NULL;
+ }
+
+ /* We have a lock on the file. */
+ return fp;
+}
+
+/***************************************************************
+ End enumeration of the smbpasswd list.
+****************************************************************/
+
+static void endsmbfilepwent(FILE *fp, int *lock_depth)
+{
+ if (!fp) {
+ return;
+ }
+
+ pw_file_unlock(fileno(fp), lock_depth);
+ fclose(fp);
+ DEBUG(7, ("endsmbfilepwent_internal: closed password file.\n"));
+}
+
+/*************************************************************************
+ Routine to return the next entry in the smbpasswd list.
+ *************************************************************************/
+
+static struct smb_passwd *getsmbfilepwent(struct smbpasswd_privates *smbpasswd_state, FILE *fp)
+{
+ /* Static buffers we will return. */
+ struct smb_passwd *pw_buf = &smbpasswd_state->pw_buf;
+ char *user_name = smbpasswd_state->user_name;
+ unsigned char *smbpwd = smbpasswd_state->smbpwd;
+ unsigned char *smbntpwd = smbpasswd_state->smbntpwd;
+ char linebuf[256];
+ int c;
+ unsigned char *p;
+ long uidval;
+ size_t linebuf_len;
+ char *status;
+
+ if(fp == NULL) {
+ DEBUG(0,("getsmbfilepwent: Bad password file pointer.\n"));
+ return NULL;
+ }
+
+ pdb_init_smb(pw_buf);
+ pw_buf->acct_ctrl = ACB_NORMAL;
+
+ /*
+ * Scan the file, a line at a time and check if the name matches.
+ */
+ status = linebuf;
+ while (status && !feof(fp)) {
+ linebuf[0] = '\0';
+
+ status = fgets(linebuf, 256, fp);
+ if (status == NULL && ferror(fp)) {
+ return NULL;
+ }
+
+ /*
+ * Check if the string is terminated with a newline - if not
+ * then we must keep reading and discard until we get one.
+ */
+ if ((linebuf_len = strlen(linebuf)) == 0) {
+ continue;
+ }
+
+ if (linebuf[linebuf_len - 1] != '\n') {
+ c = '\0';
+ while (!ferror(fp) && !feof(fp)) {
+ c = fgetc(fp);
+ if (c == '\n') {
+ break;
+ }
+ }
+ } else {
+ linebuf[linebuf_len - 1] = '\0';
+ }
+
+#ifdef DEBUG_PASSWORD
+ DEBUG(100, ("getsmbfilepwent: got line |%s|\n", linebuf));
+#endif
+ if ((linebuf[0] == 0) && feof(fp)) {
+ DEBUG(4, ("getsmbfilepwent: end of file reached\n"));
+ break;
+ }
+
+ /*
+ * The line we have should be of the form :-
+ *
+ * username:uid:32hex bytes:[Account type]:LCT-12345678....other flags presently
+ * ignored....
+ *
+ * or,
+ *
+ * username:uid:32hex bytes:32hex bytes:[Account type]:LCT-12345678....ignored....
+ *
+ * if Windows NT compatible passwords are also present.
+ * [Account type] is an ascii encoding of the type of account.
+ * LCT-(8 hex digits) is the time_t value of the last change time.
+ */
+
+ if (linebuf[0] == '#' || linebuf[0] == '\0') {
+ DEBUG(6, ("getsmbfilepwent: skipping comment or blank line\n"));
+ continue;
+ }
+ p = (unsigned char *) strchr_m(linebuf, ':');
+ if (p == NULL) {
+ DEBUG(0, ("getsmbfilepwent: malformed password entry (no :)\n"));
+ continue;
+ }
+
+ /*
+ * As 256 is shorter than a pstring we don't need to check
+ * length here - if this ever changes....
+ */
+ SMB_ASSERT(sizeof(pstring) > sizeof(linebuf));
+
+ strncpy(user_name, linebuf, PTR_DIFF(p, linebuf));
+ user_name[PTR_DIFF(p, linebuf)] = '\0';
+
+ /* Get smb uid. */
+
+ p++; /* Go past ':' */
+
+ if(*p == '-') {
+ DEBUG(0, ("getsmbfilepwent: user name %s has a negative uid.\n", user_name));
+ continue;
+ }
+
+ if (!isdigit(*p)) {
+ DEBUG(0, ("getsmbfilepwent: malformed password entry for user %s (uid not number)\n",
+ user_name));
+ continue;
+ }
+
+ uidval = atoi((char *) p);
+
+ while (*p && isdigit(*p)) {
+ p++;
+ }
+
+ if (*p != ':') {
+ DEBUG(0, ("getsmbfilepwent: malformed password entry for user %s (no : after uid)\n",
+ user_name));
+ continue;
+ }
+
+ pw_buf->smb_name = user_name;
+ pw_buf->smb_userid = uidval;
+
+ /*
+ * Now get the password value - this should be 32 hex digits
+ * which are the ascii representations of a 16 byte string.
+ * Get two at a time and put them into the password.
+ */
+
+ /* Skip the ':' */
+ p++;
+
+ if (linebuf_len < (PTR_DIFF(p, linebuf) + 33)) {
+ DEBUG(0, ("getsmbfilepwent: malformed password entry for user %s (passwd too short)\n",
+ user_name ));
+ continue;
+ }
+
+ if (p[32] != ':') {
+ DEBUG(0, ("getsmbfilepwent: malformed password entry for user %s (no terminating :)\n",
+ user_name));
+ continue;
+ }
+
+ if (strnequal((char *) p, "NO PASSWORD", 11)) {
+ pw_buf->smb_passwd = NULL;
+ pw_buf->acct_ctrl |= ACB_PWNOTREQ;
+ } else {
+ if (*p == '*' || *p == 'X') {
+ /* NULL LM password */
+ pw_buf->smb_passwd = NULL;
+ DEBUG(10, ("getsmbfilepwent: LM password for user %s invalidated\n", user_name));
+ } else if (pdb_gethexpwd((char *)p, smbpwd)) {
+ pw_buf->smb_passwd = smbpwd;
+ } else {
+ pw_buf->smb_passwd = NULL;
+ DEBUG(0, ("getsmbfilepwent: Malformed Lanman password entry for user %s \
+(non hex chars)\n", user_name));
+ }
+ }
+
+ /*
+ * Now check if the NT compatible password is
+ * available.
+ */
+ pw_buf->smb_nt_passwd = NULL;
+ p += 33; /* Move to the first character of the line after the lanman password. */
+ if ((linebuf_len >= (PTR_DIFF(p, linebuf) + 33)) && (p[32] == ':')) {
+ if (*p != '*' && *p != 'X') {
+ if(pdb_gethexpwd((char *)p,smbntpwd)) {
+ pw_buf->smb_nt_passwd = smbntpwd;
+ }
+ }
+ p += 33; /* Move to the first character of the line after the NT password. */
+ }
+
+ DEBUG(5,("getsmbfilepwent: returning passwd entry for user %s, uid %ld\n",
+ user_name, uidval));
+
+ if (*p == '[') {
+ unsigned char *end_p = (unsigned char *)strchr_m((char *)p, ']');
+ pw_buf->acct_ctrl = pdb_decode_acct_ctrl((char*)p);
+
+ /* Must have some account type set. */
+ if(pw_buf->acct_ctrl == 0) {
+ pw_buf->acct_ctrl = ACB_NORMAL;
+ }
+
+ /* Now try and get the last change time. */
+ if(end_p) {
+ p = end_p + 1;
+ }
+ if(*p == ':') {
+ p++;
+ if(*p && (StrnCaseCmp((char *)p, "LCT-", 4)==0)) {
+ int i;
+ p += 4;
+ for(i = 0; i < 8; i++) {
+ if(p[i] == '\0' || !isxdigit(p[i])) {
+ break;
+ }
+ }
+ if(i == 8) {
+ /*
+ * p points at 8 characters of hex digits -
+ * read into a time_t as the seconds since
+ * 1970 that the password was last changed.
+ */
+ pw_buf->pass_last_set_time = (time_t)strtol((char *)p, NULL, 16);
+ }
+ }
+ }
+ } else {
+ /* 'Old' style file. Fake up based on user name. */
+ /*
+ * Currently trust accounts are kept in the same
+ * password file as 'normal accounts'. If this changes
+ * we will have to fix this code. JRA.
+ */
+ if(pw_buf->smb_name[strlen(pw_buf->smb_name) - 1] == '$') {
+ pw_buf->acct_ctrl &= ~ACB_NORMAL;
+ pw_buf->acct_ctrl |= ACB_WSTRUST;
+ }
+ }
+
+ return pw_buf;
+ }
+
+ DEBUG(5,("getsmbfilepwent: end of file reached.\n"));
+ return NULL;
+}
+
+/************************************************************************
+ Create a new smbpasswd entry - malloced space returned.
+*************************************************************************/
+
+static char *format_new_smbpasswd_entry(const struct smb_passwd *newpwd)
+{
+ int new_entry_length;
+ char *new_entry;
+ char *p;
+
+ new_entry_length = strlen(newpwd->smb_name) + 1 + 15 + 1 + 32 + 1 + 32 + 1 +
+ NEW_PW_FORMAT_SPACE_PADDED_LEN + 1 + 13 + 2;
+
+ if((new_entry = (char *)SMB_MALLOC( new_entry_length )) == NULL) {
+ DEBUG(0, ("format_new_smbpasswd_entry: Malloc failed adding entry for user %s.\n",
+ newpwd->smb_name ));
+ return NULL;
+ }
+
+ slprintf(new_entry, new_entry_length - 1, "%s:%u:", newpwd->smb_name, (unsigned)newpwd->smb_userid);
+
+ p = new_entry+strlen(new_entry);
+ pdb_sethexpwd(p, newpwd->smb_passwd, newpwd->acct_ctrl);
+ p+=strlen(p);
+ *p = ':';
+ p++;
+
+ pdb_sethexpwd(p, newpwd->smb_nt_passwd, newpwd->acct_ctrl);
+ p+=strlen(p);
+ *p = ':';
+ p++;
+
+ /* Add the account encoding and the last change time. */
+ slprintf((char *)p, new_entry_length - 1 - (p - new_entry), "%s:LCT-%08X:\n",
+ pdb_encode_acct_ctrl(newpwd->acct_ctrl, NEW_PW_FORMAT_SPACE_PADDED_LEN),
+ (uint32)newpwd->pass_last_set_time);
+
+ return new_entry;
+}
+
+/************************************************************************
+ Routine to add an entry to the smbpasswd file.
+*************************************************************************/
+
+static BOOL add_smbfilepwd_entry(struct smbpasswd_privates *smbpasswd_state, struct smb_passwd *newpwd)
+{
+ const char *pfile = smbpasswd_state->smbpasswd_file;
+ struct smb_passwd *pwd = NULL;
+ FILE *fp = NULL;
+ int wr_len;
+ int fd;
+ size_t new_entry_length;
+ char *new_entry;
+ SMB_OFF_T offpos;
+ uint32 max_found_uid = 0;
+
+ /* Open the smbpassword file - for update. */
+ fp = startsmbfilepwent(pfile, PWF_UPDATE, &smbpasswd_state->pw_file_lock_depth);
+
+ if (fp == NULL && errno == ENOENT) {
+ /* Try again - create. */
+ fp = startsmbfilepwent(pfile, PWF_CREATE, &smbpasswd_state->pw_file_lock_depth);
+ }
+
+ if (fp == NULL) {
+ DEBUG(0, ("add_smbfilepwd_entry: unable to open file.\n"));
+ return False;
+ }
+
+ /*
+ * Scan the file, a line at a time and check if the name matches.
+ */
+
+ while ((pwd = getsmbfilepwent(smbpasswd_state, fp)) != NULL) {
+ if (strequal(newpwd->smb_name, pwd->smb_name)) {
+ DEBUG(0, ("add_smbfilepwd_entry: entry with name %s already exists\n", pwd->smb_name));
+ endsmbfilepwent(fp, &smbpasswd_state->pw_file_lock_depth);
+ return False;
+ }
+
+ /* Look for a free uid for use in non-unix accounts */
+ if (pwd->smb_userid > max_found_uid) {
+ max_found_uid = pwd->smb_userid;
+ }
+ }
+
+ /* Ok - entry doesn't exist. We can add it */
+
+ /* Create a new smb passwd entry and set it to the given password. */
+ /*
+ * The add user write needs to be atomic - so get the fd from
+ * the fp and do a raw write() call.
+ */
+ fd = fileno(fp);
+
+ if((offpos = sys_lseek(fd, 0, SEEK_END)) == -1) {
+ DEBUG(0, ("add_smbfilepwd_entry(sys_lseek): Failed to add entry for user %s to file %s. \
+Error was %s\n", newpwd->smb_name, pfile, strerror(errno)));
+ endsmbfilepwent(fp, &smbpasswd_state->pw_file_lock_depth);
+ return False;
+ }
+
+ if((new_entry = format_new_smbpasswd_entry(newpwd)) == NULL) {
+ DEBUG(0, ("add_smbfilepwd_entry(malloc): Failed to add entry for user %s to file %s. \
+Error was %s\n", newpwd->smb_name, pfile, strerror(errno)));
+ endsmbfilepwent(fp, &smbpasswd_state->pw_file_lock_depth);
+ return False;
+ }
+
+ new_entry_length = strlen(new_entry);
+
+#ifdef DEBUG_PASSWORD
+ DEBUG(100, ("add_smbfilepwd_entry(%d): new_entry_len %d made line |%s|",
+ fd, (int)new_entry_length, new_entry));
+#endif
+
+ if ((wr_len = write(fd, new_entry, new_entry_length)) != new_entry_length) {
+ DEBUG(0, ("add_smbfilepwd_entry(write): %d Failed to add entry for user %s to file %s. \
+Error was %s\n", wr_len, newpwd->smb_name, pfile, strerror(errno)));
+
+ /* Remove the entry we just wrote. */
+ if(sys_ftruncate(fd, offpos) == -1) {
+ DEBUG(0, ("add_smbfilepwd_entry: ERROR failed to ftruncate file %s. \
+Error was %s. Password file may be corrupt ! Please examine by hand !\n",
+ newpwd->smb_name, strerror(errno)));
+ }
+
+ endsmbfilepwent(fp, &smbpasswd_state->pw_file_lock_depth);
+ free(new_entry);
+ return False;
+ }
+
+ free(new_entry);
+ endsmbfilepwent(fp, &smbpasswd_state->pw_file_lock_depth);
+ return True;
+}
+
+/************************************************************************
+ Routine to search the smbpasswd file for an entry matching the username.
+ and then modify its password entry. We can't use the startsmbpwent()/
+ getsmbpwent()/endsmbpwent() interfaces here as we depend on looking
+ in the actual file to decide how much room we have to write data.
+ override = False, normal
+ override = True, override XXXXXXXX'd out password or NO PASS
+************************************************************************/
+
+static BOOL mod_smbfilepwd_entry(struct smbpasswd_privates *smbpasswd_state, const struct smb_passwd* pwd)
+{
+ /* Static buffers we will return. */
+ pstring user_name;
+
+ char *status;
+ char linebuf[256];
+ char readbuf[1024];
+ int c;
+ fstring ascii_p16;
+ fstring encode_bits;
+ unsigned char *p = NULL;
+ size_t linebuf_len = 0;
+ FILE *fp;
+ int lockfd;
+ const char *pfile = smbpasswd_state->smbpasswd_file;
+ BOOL found_entry = False;
+ BOOL got_pass_last_set_time = False;
+
+ SMB_OFF_T pwd_seekpos = 0;
+
+ int i;
+ int wr_len;
+ int fd;
+
+ if (!*pfile) {
+ DEBUG(0, ("No SMB password file set\n"));
+ return False;
+ }
+ DEBUG(10, ("mod_smbfilepwd_entry: opening file %s\n", pfile));
+
+ fp = sys_fopen(pfile, "r+");
+
+ if (fp == NULL) {
+ DEBUG(0, ("mod_smbfilepwd_entry: unable to open file %s\n", pfile));
+ return False;
+ }
+ /* Set a buffer to do more efficient reads */
+ setvbuf(fp, readbuf, _IOFBF, sizeof(readbuf));
+
+ lockfd = fileno(fp);
+
+ if (!pw_file_lock(lockfd, F_WRLCK, 5, &smbpasswd_state->pw_file_lock_depth)) {
+ DEBUG(0, ("mod_smbfilepwd_entry: unable to lock file %s\n", pfile));
+ fclose(fp);
+ return False;
+ }
+
+ /* Make sure it is only rw by the owner */
+ chmod(pfile, 0600);
+
+ /* We have a write lock on the file. */
+ /*
+ * Scan the file, a line at a time and check if the name matches.
+ */
+ status = linebuf;
+ while (status && !feof(fp)) {
+ pwd_seekpos = sys_ftell(fp);
+
+ linebuf[0] = '\0';
+
+ status = fgets(linebuf, sizeof(linebuf), fp);
+ if (status == NULL && ferror(fp)) {
+ pw_file_unlock(lockfd, &smbpasswd_state->pw_file_lock_depth);
+ fclose(fp);
+ return False;
+ }
+
+ /*
+ * Check if the string is terminated with a newline - if not
+ * then we must keep reading and discard until we get one.
+ */
+ linebuf_len = strlen(linebuf);
+ if (linebuf[linebuf_len - 1] != '\n') {
+ c = '\0';
+ while (!ferror(fp) && !feof(fp)) {
+ c = fgetc(fp);
+ if (c == '\n') {
+ break;
+ }
+ }
+ } else {
+ linebuf[linebuf_len - 1] = '\0';
+ }
+
+#ifdef DEBUG_PASSWORD
+ DEBUG(100, ("mod_smbfilepwd_entry: got line |%s|\n", linebuf));
+#endif
+
+ if ((linebuf[0] == 0) && feof(fp)) {
+ DEBUG(4, ("mod_smbfilepwd_entry: end of file reached\n"));
+ break;
+ }
+
+ /*
+ * The line we have should be of the form :-
+ *
+ * username:uid:[32hex bytes]:....other flags presently
+ * ignored....
+ *
+ * or,
+ *
+ * username:uid:[32hex bytes]:[32hex bytes]:[attributes]:LCT-XXXXXXXX:...ignored.
+ *
+ * if Windows NT compatible passwords are also present.
+ */
+
+ if (linebuf[0] == '#' || linebuf[0] == '\0') {
+ DEBUG(6, ("mod_smbfilepwd_entry: skipping comment or blank line\n"));
+ continue;
+ }
+
+ p = (unsigned char *) strchr_m(linebuf, ':');
+
+ if (p == NULL) {
+ DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (no :)\n"));
+ continue;
+ }
+
+ /*
+ * As 256 is shorter than a pstring we don't need to check
+ * length here - if this ever changes....
+ */
+
+ SMB_ASSERT(sizeof(user_name) > sizeof(linebuf));
+
+ strncpy(user_name, linebuf, PTR_DIFF(p, linebuf));
+ user_name[PTR_DIFF(p, linebuf)] = '\0';
+ if (strequal(user_name, pwd->smb_name)) {
+ found_entry = True;
+ break;
+ }
+ }
+
+ if (!found_entry) {
+ pw_file_unlock(lockfd, &smbpasswd_state->pw_file_lock_depth);
+ fclose(fp);
+
+ DEBUG(2, ("Cannot update entry for user %s, as they don't exist in the smbpasswd file!\n",
+ pwd->smb_name));
+ return False;
+ }
+
+ DEBUG(6, ("mod_smbfilepwd_entry: entry exists for user %s\n", pwd->smb_name));
+
+ /* User name matches - get uid and password */
+ p++; /* Go past ':' */
+
+ if (!isdigit(*p)) {
+ DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry for user %s (uid not number)\n",
+ pwd->smb_name));
+ pw_file_unlock(lockfd, &smbpasswd_state->pw_file_lock_depth);
+ fclose(fp);
+ return False;
+ }
+
+ while (*p && isdigit(*p)) {
+ p++;
+ }
+ if (*p != ':') {
+ DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry for user %s (no : after uid)\n",
+ pwd->smb_name));
+ pw_file_unlock(lockfd, &smbpasswd_state->pw_file_lock_depth);
+ fclose(fp);
+ return False;
+ }
+
+ /*
+ * Now get the password value - this should be 32 hex digits
+ * which are the ascii representations of a 16 byte string.
+ * Get two at a time and put them into the password.
+ */
+ p++;
+
+ /* Record exact password position */
+ pwd_seekpos += PTR_DIFF(p, linebuf);
+
+ if (linebuf_len < (PTR_DIFF(p, linebuf) + 33)) {
+ DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry for user %s (passwd too short)\n",
+ pwd->smb_name));
+ pw_file_unlock(lockfd,&smbpasswd_state->pw_file_lock_depth);
+ fclose(fp);
+ return (False);
+ }
+
+ if (p[32] != ':') {
+ DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry for user %s (no terminating :)\n",
+ pwd->smb_name));
+ pw_file_unlock(lockfd,&smbpasswd_state->pw_file_lock_depth);
+ fclose(fp);
+ return False;
+ }
+
+ /* Now check if the NT compatible password is available. */
+ p += 33; /* Move to the first character of the line after the lanman password. */
+ if (linebuf_len < (PTR_DIFF(p, linebuf) + 33)) {
+ DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry for user %s (passwd too short)\n",
+ pwd->smb_name));
+ pw_file_unlock(lockfd,&smbpasswd_state->pw_file_lock_depth);
+ fclose(fp);
+ return (False);
+ }
+
+ if (p[32] != ':') {
+ DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry for user %s (no terminating :)\n",
+ pwd->smb_name));
+ pw_file_unlock(lockfd,&smbpasswd_state->pw_file_lock_depth);
+ fclose(fp);
+ return False;
+ }
+
+ /*
+ * Now check if the account info and the password last
+ * change time is available.
+ */
+ p += 33; /* Move to the first character of the line after the NT password. */
+
+ if (*p == '[') {
+ i = 0;
+ encode_bits[i++] = *p++;
+ while((linebuf_len > PTR_DIFF(p, linebuf)) && (*p != ']')) {
+ encode_bits[i++] = *p++;
+ }
+
+ encode_bits[i++] = ']';
+ encode_bits[i++] = '\0';
+
+ if(i == NEW_PW_FORMAT_SPACE_PADDED_LEN) {
+ /*
+ * We are using a new format, space padded
+ * acct ctrl field. Encode the given acct ctrl
+ * bits into it.
+ */
+ fstrcpy(encode_bits, pdb_encode_acct_ctrl(pwd->acct_ctrl, NEW_PW_FORMAT_SPACE_PADDED_LEN));
+ } else {
+ DEBUG(0,("mod_smbfilepwd_entry: Using old smbpasswd format for user %s. \
+This is no longer supported.!\n", pwd->smb_name));
+ DEBUG(0,("mod_smbfilepwd_entry: No changes made, failing.!\n"));
+ pw_file_unlock(lockfd, &smbpasswd_state->pw_file_lock_depth);
+ fclose(fp);
+ return False;
+ }
+
+ /* Go past the ']' */
+ if(linebuf_len > PTR_DIFF(p, linebuf)) {
+ p++;
+ }
+
+ if((linebuf_len > PTR_DIFF(p, linebuf)) && (*p == ':')) {
+ p++;
+
+ /* We should be pointing at the LCT entry. */
+ if((linebuf_len > (PTR_DIFF(p, linebuf) + 13)) && (StrnCaseCmp((char *)p, "LCT-", 4) == 0)) {
+ p += 4;
+ for(i = 0; i < 8; i++) {
+ if(p[i] == '\0' || !isxdigit(p[i])) {
+ break;
+ }
+ }
+ if(i == 8) {
+ /*
+ * p points at 8 characters of hex digits -
+ * read into a time_t as the seconds since
+ * 1970 that the password was last changed.
+ */
+ got_pass_last_set_time = True;
+ } /* i == 8 */
+ } /* *p && StrnCaseCmp() */
+ } /* p == ':' */
+ } /* p == '[' */
+
+ /* Entry is correctly formed. */
+
+ /* Create the 32 byte representation of the new p16 */
+ pdb_sethexpwd(ascii_p16, pwd->smb_passwd, pwd->acct_ctrl);
+
+ /* Add on the NT md4 hash */
+ ascii_p16[32] = ':';
+ wr_len = 66;
+ pdb_sethexpwd(ascii_p16+33, pwd->smb_nt_passwd, pwd->acct_ctrl);
+ ascii_p16[65] = ':';
+ ascii_p16[66] = '\0'; /* null-terminate the string so that strlen works */
+
+ /* Add on the account info bits and the time of last password change. */
+ if(got_pass_last_set_time) {
+ slprintf(&ascii_p16[strlen(ascii_p16)],
+ sizeof(ascii_p16)-(strlen(ascii_p16)+1),
+ "%s:LCT-%08X:",
+ encode_bits, (uint32)pwd->pass_last_set_time );
+ wr_len = strlen(ascii_p16);
+ }
+
+#ifdef DEBUG_PASSWORD
+ DEBUG(100,("mod_smbfilepwd_entry: "));
+ dump_data(100, ascii_p16, wr_len);
+#endif
+
+ if(wr_len > sizeof(linebuf)) {
+ DEBUG(0, ("mod_smbfilepwd_entry: line to write (%d) is too long.\n", wr_len+1));
+ pw_file_unlock(lockfd,&smbpasswd_state->pw_file_lock_depth);
+ fclose(fp);
+ return (False);
+ }
+
+ /*
+ * Do an atomic write into the file at the position defined by
+ * seekpos.
+ */
+
+ /* The mod user write needs to be atomic - so get the fd from
+ the fp and do a raw write() call.
+ */
+
+ fd = fileno(fp);
+
+ if (sys_lseek(fd, pwd_seekpos - 1, SEEK_SET) != pwd_seekpos - 1) {
+ DEBUG(0, ("mod_smbfilepwd_entry: seek fail on file %s.\n", pfile));
+ pw_file_unlock(lockfd,&smbpasswd_state->pw_file_lock_depth);
+ fclose(fp);
+ return False;
+ }
+
+ /* Sanity check - ensure the areas we are writing are framed by ':' */
+ if (read(fd, linebuf, wr_len+1) != wr_len+1) {
+ DEBUG(0, ("mod_smbfilepwd_entry: read fail on file %s.\n", pfile));
+ pw_file_unlock(lockfd,&smbpasswd_state->pw_file_lock_depth);
+ fclose(fp);
+ return False;
+ }
+
+ if ((linebuf[0] != ':') || (linebuf[wr_len] != ':')) {
+ DEBUG(0, ("mod_smbfilepwd_entry: check on passwd file %s failed.\n", pfile));
+ pw_file_unlock(lockfd,&smbpasswd_state->pw_file_lock_depth);
+ fclose(fp);
+ return False;
+ }
+
+ if (sys_lseek(fd, pwd_seekpos, SEEK_SET) != pwd_seekpos) {
+ DEBUG(0, ("mod_smbfilepwd_entry: seek fail on file %s.\n", pfile));
+ pw_file_unlock(lockfd,&smbpasswd_state->pw_file_lock_depth);
+ fclose(fp);
+ return False;
+ }
+
+ if (write(fd, ascii_p16, wr_len) != wr_len) {
+ DEBUG(0, ("mod_smbfilepwd_entry: write failed in passwd file %s\n", pfile));
+ pw_file_unlock(lockfd,&smbpasswd_state->pw_file_lock_depth);
+ fclose(fp);
+ return False;
+ }
+
+ pw_file_unlock(lockfd,&smbpasswd_state->pw_file_lock_depth);
+ fclose(fp);
+ return True;
+}
+
+/************************************************************************
+ Routine to delete an entry in the smbpasswd file by name.
+*************************************************************************/
+
+static BOOL del_smbfilepwd_entry(struct smbpasswd_privates *smbpasswd_state, const char *name)
+{
+ const char *pfile = smbpasswd_state->smbpasswd_file;
+ pstring pfile2;
+ struct smb_passwd *pwd = NULL;
+ FILE *fp = NULL;
+ FILE *fp_write = NULL;
+ int pfile2_lockdepth = 0;
+
+ slprintf(pfile2, sizeof(pfile2)-1, "%s.%u", pfile, (unsigned)sys_getpid() );
+
+ /*
+ * Open the smbpassword file - for update. It needs to be update
+ * as we need any other processes to wait until we have replaced
+ * it.
+ */
+
+ if((fp = startsmbfilepwent(pfile, PWF_UPDATE, &smbpasswd_state->pw_file_lock_depth)) == NULL) {
+ DEBUG(0, ("del_smbfilepwd_entry: unable to open file %s.\n", pfile));
+ return False;
+ }
+
+ /*
+ * Create the replacement password file.
+ */
+ if((fp_write = startsmbfilepwent(pfile2, PWF_CREATE, &pfile2_lockdepth)) == NULL) {
+ DEBUG(0, ("del_smbfilepwd_entry: unable to open file %s.\n", pfile));
+ endsmbfilepwent(fp, &smbpasswd_state->pw_file_lock_depth);
+ return False;
+ }
+
+ /*
+ * Scan the file, a line at a time and check if the name matches.
+ */
+
+ while ((pwd = getsmbfilepwent(smbpasswd_state, fp)) != NULL) {
+ char *new_entry;
+ size_t new_entry_length;
+
+ if (strequal(name, pwd->smb_name)) {
+ DEBUG(10, ("add_smbfilepwd_entry: found entry with name %s - deleting it.\n", name));
+ continue;
+ }
+
+ /*
+ * We need to copy the entry out into the second file.
+ */
+
+ if((new_entry = format_new_smbpasswd_entry(pwd)) == NULL) {
+ DEBUG(0, ("del_smbfilepwd_entry(malloc): Failed to copy entry for user %s to file %s. \
+Error was %s\n", pwd->smb_name, pfile2, strerror(errno)));
+ unlink(pfile2);
+ endsmbfilepwent(fp, &smbpasswd_state->pw_file_lock_depth);
+ endsmbfilepwent(fp_write, &pfile2_lockdepth);
+ return False;
+ }
+
+ new_entry_length = strlen(new_entry);
+
+ if(fwrite(new_entry, 1, new_entry_length, fp_write) != new_entry_length) {
+ DEBUG(0, ("del_smbfilepwd_entry(write): Failed to copy entry for user %s to file %s. \
+Error was %s\n", pwd->smb_name, pfile2, strerror(errno)));
+ unlink(pfile2);
+ endsmbfilepwent(fp, &smbpasswd_state->pw_file_lock_depth);
+ endsmbfilepwent(fp_write, &pfile2_lockdepth);
+ free(new_entry);
+ return False;
+ }
+
+ free(new_entry);
+ }
+
+ /*
+ * Ensure pfile2 is flushed before rename.
+ */
+
+ if(fflush(fp_write) != 0) {
+ DEBUG(0, ("del_smbfilepwd_entry: Failed to flush file %s. Error was %s\n", pfile2, strerror(errno)));
+ endsmbfilepwent(fp, &smbpasswd_state->pw_file_lock_depth);
+ endsmbfilepwent(fp_write,&pfile2_lockdepth);
+ return False;
+ }
+
+ /*
+ * Do an atomic rename - then release the locks.
+ */
+
+ if(rename(pfile2,pfile) != 0) {
+ unlink(pfile2);
+ }
+
+ endsmbfilepwent(fp, &smbpasswd_state->pw_file_lock_depth);
+ endsmbfilepwent(fp_write,&pfile2_lockdepth);
+ return True;
+}
+
+/*********************************************************************
+ Create a smb_passwd struct from a SAM_ACCOUNT.
+ We will not allocate any new memory. The smb_passwd struct
+ should only stay around as long as the SAM_ACCOUNT does.
+ ********************************************************************/
+
+static BOOL build_smb_pass (struct smb_passwd *smb_pw, const SAM_ACCOUNT *sampass)
+{
+ uint32 rid;
+
+ if (sampass == NULL)
+ return False;
+ ZERO_STRUCTP(smb_pw);
+
+ if (!IS_SAM_DEFAULT(sampass, PDB_USERSID)) {
+ rid = pdb_get_user_rid(sampass);
+
+ /* If the user specified a RID, make sure its able to be both stored and retreived */
+ if (rid == DOMAIN_USER_RID_GUEST) {
+ struct passwd *passwd = getpwnam_alloc(lp_guestaccount());
+ if (!passwd) {
+ DEBUG(0, ("Could not find gest account via getpwnam()! (%s)\n", lp_guestaccount()));
+ return False;
+ }
+ smb_pw->smb_userid=passwd->pw_uid;
+ passwd_free(&passwd);
+
+ } else if (algorithmic_pdb_rid_is_user(rid)) {
+ smb_pw->smb_userid=algorithmic_pdb_user_rid_to_uid(rid);
+ } else {
+ DEBUG(0,("build_sam_pass: Failing attempt to store user with non-uid based user RID. \n"));
+ return False;
+ }
+ }
+
+ smb_pw->smb_name=(const char*)pdb_get_username(sampass);
+
+ smb_pw->smb_passwd=pdb_get_lanman_passwd(sampass);
+ smb_pw->smb_nt_passwd=pdb_get_nt_passwd(sampass);
+
+ smb_pw->acct_ctrl=pdb_get_acct_ctrl(sampass);
+ smb_pw->pass_last_set_time=pdb_get_pass_last_set_time(sampass);
+
+ return True;
+}
+
+/*********************************************************************
+ Create a SAM_ACCOUNT from a smb_passwd struct
+ ********************************************************************/
+
+static BOOL build_sam_account(struct smbpasswd_privates *smbpasswd_state,
+ SAM_ACCOUNT *sam_pass, const struct smb_passwd *pw_buf)
+{
+ struct passwd *pwfile;
+
+ if (sam_pass==NULL) {
+ DEBUG(5,("build_sam_account: SAM_ACCOUNT is NULL\n"));
+ return False;
+ }
+
+ /* verify the user account exists */
+
+ if ( !(pwfile = getpwnam_alloc(pw_buf->smb_name)) ) {
+ 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));
+ return False;
+ }
+
+ if (!NT_STATUS_IS_OK(pdb_fill_sam_pw(sam_pass, pwfile)))
+ return False;
+
+ passwd_free(&pwfile);
+
+ /* set remaining fields */
+
+ pdb_set_nt_passwd (sam_pass, pw_buf->smb_nt_passwd, PDB_SET);
+ pdb_set_lanman_passwd (sam_pass, pw_buf->smb_passwd, PDB_SET);
+ pdb_set_acct_ctrl (sam_pass, pw_buf->acct_ctrl, PDB_SET);
+ pdb_set_pass_last_set_time (sam_pass, pw_buf->pass_last_set_time, PDB_SET);
+ pdb_set_pass_can_change_time (sam_pass, pw_buf->pass_last_set_time, PDB_SET);
+
+ return True;
+}
+
+/*****************************************************************
+ Functions to be implemented by the new passdb API
+ ****************************************************************/
+
+static NTSTATUS smbpasswd_setsampwent (struct pdb_methods *my_methods, BOOL update, uint16 acb_mask)
+{
+ struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
+
+ smbpasswd_state->pw_file = startsmbfilepwent(smbpasswd_state->smbpasswd_file,
+ update ? PWF_UPDATE : PWF_READ,
+ &(smbpasswd_state->pw_file_lock_depth));
+
+ /* did we fail? Should we try to create it? */
+ if (!smbpasswd_state->pw_file && update && errno == ENOENT) {
+ FILE *fp;
+ /* slprintf(msg_str,msg_str_len-1,
+ "smbpasswd file did not exist - attempting to create it.\n"); */
+ DEBUG(0,("smbpasswd file did not exist - attempting to create it.\n"));
+ fp = sys_fopen(smbpasswd_state->smbpasswd_file, "w");
+ if (fp) {
+ fprintf(fp, "# Samba SMB password file\n");
+ fclose(fp);
+ }
+
+ smbpasswd_state->pw_file = startsmbfilepwent(smbpasswd_state->smbpasswd_file,
+ update ? PWF_UPDATE : PWF_READ,
+ &(smbpasswd_state->pw_file_lock_depth));
+ }
+
+ if (smbpasswd_state->pw_file != NULL)
+ return NT_STATUS_OK;
+ else
+ return NT_STATUS_UNSUCCESSFUL;
+}
+
+static void smbpasswd_endsampwent (struct pdb_methods *my_methods)
+{
+ struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
+ endsmbfilepwent(smbpasswd_state->pw_file, &(smbpasswd_state->pw_file_lock_depth));
+}
+
+/*****************************************************************
+ ****************************************************************/
+
+static NTSTATUS smbpasswd_getsampwent(struct pdb_methods *my_methods, SAM_ACCOUNT *user)
+{
+ NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
+ struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
+ struct smb_passwd *pw_buf=NULL;
+ BOOL done = False;
+ DEBUG(5,("pdb_getsampwent\n"));
+
+ if (user==NULL) {
+ DEBUG(5,("pdb_getsampwent (smbpasswd): user is NULL\n"));
+#if 0
+ smb_panic("NULL pointer passed to getsampwent (smbpasswd)\n");
+#endif
+ return nt_status;
+ }
+
+ while (!done) {
+ /* do we have an entry? */
+ pw_buf = getsmbfilepwent(smbpasswd_state, smbpasswd_state->pw_file);
+ if (pw_buf == NULL)
+ return nt_status;
+
+ /* build the SAM_ACCOUNT entry from the smb_passwd struct.
+ We loop in case the user in the pdb does not exist in
+ the local system password file */
+ if (build_sam_account(smbpasswd_state, user, pw_buf))
+ done = True;
+ }
+
+ DEBUG(5,("getsampwent (smbpasswd): done\n"));
+
+ /* success */
+ return NT_STATUS_OK;
+}
+
+/****************************************************************
+ Search smbpasswd file by iterating over the entries. Do not
+ call getpwnam() for unix account information until we have found
+ the correct entry
+ ***************************************************************/
+
+static NTSTATUS smbpasswd_getsampwnam(struct pdb_methods *my_methods,
+ SAM_ACCOUNT *sam_acct, const char *username)
+{
+ NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
+ struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
+ struct smb_passwd *smb_pw;
+ void *fp = NULL;
+
+ DEBUG(10, ("getsampwnam (smbpasswd): search by name: %s\n", username));
+
+ /* startsmbfilepwent() is used here as we don't want to lookup
+ the UNIX account in the local system password file until
+ we have a match. */
+ fp = startsmbfilepwent(smbpasswd_state->smbpasswd_file, PWF_READ, &(smbpasswd_state->pw_file_lock_depth));
+
+ if (fp == NULL) {
+ DEBUG(0, ("Unable to open passdb database.\n"));
+ return nt_status;
+ }
+
+ while ( ((smb_pw=getsmbfilepwent(smbpasswd_state, fp)) != NULL)&& (!strequal(smb_pw->smb_name, username)) )
+ /* do nothing....another loop */ ;
+
+ endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
+
+
+ /* did we locate the username in smbpasswd */
+ if (smb_pw == NULL)
+ return nt_status;
+
+ DEBUG(10, ("getsampwnam (smbpasswd): found by name: %s\n", smb_pw->smb_name));
+
+ if (!sam_acct) {
+ DEBUG(10,("getsampwnam (smbpasswd): SAM_ACCOUNT is NULL\n"));
+#if 0
+ smb_panic("NULL pointer passed to pdb_getsampwnam\n");
+#endif
+ return nt_status;
+ }
+
+ /* now build the SAM_ACCOUNT */
+ if (!build_sam_account(smbpasswd_state, sam_acct, smb_pw))
+ return nt_status;
+
+ /* success */
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS smbpasswd_getsampwsid(struct pdb_methods *my_methods, SAM_ACCOUNT *sam_acct, const DOM_SID *sid)
+{
+ NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
+ struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
+ struct smb_passwd *smb_pw;
+ void *fp = NULL;
+ fstring sid_str;
+ uint32 rid;
+
+ DEBUG(10, ("smbpasswd_getsampwrid: search by sid: %s\n", sid_to_string(sid_str, sid)));
+
+ if (!sid_peek_check_rid(get_global_sam_sid(), sid, &rid))
+ return NT_STATUS_UNSUCCESSFUL;
+
+ /* More special case 'guest account' hacks... */
+ if (rid == DOMAIN_USER_RID_GUEST) {
+ const char *guest_account = lp_guestaccount();
+ if (!(guest_account && *guest_account)) {
+ DEBUG(1, ("Guest account not specfied!\n"));
+ return nt_status;
+ }
+ return smbpasswd_getsampwnam(my_methods, sam_acct, guest_account);
+ }
+
+ /* Open the sam password file - not for update. */
+ fp = startsmbfilepwent(smbpasswd_state->smbpasswd_file, PWF_READ, &(smbpasswd_state->pw_file_lock_depth));
+
+ if (fp == NULL) {
+ DEBUG(0, ("Unable to open passdb database.\n"));
+ return nt_status;
+ }
+
+ while ( ((smb_pw=getsmbfilepwent(smbpasswd_state, fp)) != NULL) && (algorithmic_pdb_uid_to_user_rid(smb_pw->smb_userid) != rid) )
+ /* do nothing */ ;
+
+ endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth));
+
+
+ /* did we locate the username in smbpasswd */
+ if (smb_pw == NULL)
+ return nt_status;
+
+ DEBUG(10, ("getsampwrid (smbpasswd): found by name: %s\n", smb_pw->smb_name));
+
+ if (!sam_acct) {
+ DEBUG(10,("getsampwrid: (smbpasswd) SAM_ACCOUNT is NULL\n"));
+#if 0
+ smb_panic("NULL pointer passed to pdb_getsampwrid\n");
+#endif
+ return nt_status;
+ }
+
+ /* now build the SAM_ACCOUNT */
+ if (!build_sam_account (smbpasswd_state, sam_acct, smb_pw))
+ return nt_status;
+
+ /* build_sam_account might change the SID on us, if the name was for the guest account */
+ if (NT_STATUS_IS_OK(nt_status) && !sid_equal(pdb_get_user_sid(sam_acct), sid)) {
+ fstring sid_string1, sid_string2;
+ DEBUG(1, ("looking for user with sid %s instead returned %s for account %s!?!\n",
+ sid_to_string(sid_string1, sid), sid_to_string(sid_string2, pdb_get_user_sid(sam_acct)), pdb_get_username(sam_acct)));
+ return NT_STATUS_NO_SUCH_USER;
+ }
+
+ /* success */
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS smbpasswd_add_sam_account(struct pdb_methods *my_methods, SAM_ACCOUNT *sampass)
+{
+ struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
+ struct smb_passwd smb_pw;
+
+ /* convert the SAM_ACCOUNT */
+ if (!build_smb_pass(&smb_pw, sampass)) {
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ /* add the entry */
+ if(!add_smbfilepwd_entry(smbpasswd_state, &smb_pw)) {
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS smbpasswd_update_sam_account(struct pdb_methods *my_methods, SAM_ACCOUNT *sampass)
+{
+ struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
+ struct smb_passwd smb_pw;
+
+ /* convert the SAM_ACCOUNT */
+ if (!build_smb_pass(&smb_pw, sampass)) {
+ DEBUG(0, ("smbpasswd_update_sam_account: build_smb_pass failed!\n"));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ /* update the entry */
+ if(!mod_smbfilepwd_entry(smbpasswd_state, &smb_pw)) {
+ DEBUG(0, ("smbpasswd_update_sam_account: mod_smbfilepwd_entry failed!\n"));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS smbpasswd_delete_sam_account (struct pdb_methods *my_methods, SAM_ACCOUNT *sampass)
+{
+ struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)my_methods->private_data;
+
+ const char *username = pdb_get_username(sampass);
+
+ if (del_smbfilepwd_entry(smbpasswd_state, username))
+ return NT_STATUS_OK;
+
+ return NT_STATUS_UNSUCCESSFUL;
+}
+
+static NTSTATUS smbpasswd_rename_sam_account (struct pdb_methods *my_methods,
+ SAM_ACCOUNT *old_acct,
+ const char *newname)
+{
+ pstring rename_script;
+ SAM_ACCOUNT *new_acct = NULL;
+ BOOL interim_account = False;
+ NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
+
+ if (!*(lp_renameuser_script()))
+ goto done;
+
+ if (!pdb_copy_sam_account(old_acct, &new_acct) ||
+ !pdb_set_username(new_acct, newname, PDB_CHANGED))
+ goto done;
+
+ ret = smbpasswd_add_sam_account(my_methods, new_acct);
+ if (!NT_STATUS_IS_OK(ret))
+ goto done;
+
+ interim_account = True;
+
+ /* rename the posix user */
+ pstrcpy(rename_script, lp_renameuser_script());
+
+ if (*rename_script) {
+ int rename_ret;
+
+ pstring_sub(rename_script, "%unew", newname);
+ pstring_sub(rename_script, "%uold",
+ pdb_get_username(old_acct));
+ rename_ret = smbrun(rename_script, NULL);
+
+ DEBUG(rename_ret ? 0 : 3,("Running the command `%s' gave %d\n", rename_script, rename_ret));
+
+ if (rename_ret)
+ goto done;
+ } else {
+ goto done;
+ }
+
+ smbpasswd_delete_sam_account(my_methods, old_acct);
+ interim_account = False;
+
+done:
+ /* cleanup */
+ if (interim_account)
+ smbpasswd_delete_sam_account(my_methods, new_acct);
+
+ if (new_acct)
+ pdb_free_sam(&new_acct);
+
+ return (ret);
+}
+
+static void free_private_data(void **vp)
+{
+ struct smbpasswd_privates **privates = (struct smbpasswd_privates**)vp;
+
+ endsmbfilepwent((*privates)->pw_file, &((*privates)->pw_file_lock_depth));
+
+ *privates = NULL;
+ /* No need to free any further, as it is talloc()ed */
+}
+
+static NTSTATUS pdb_init_smbpasswd(PDB_CONTEXT *pdb_context, PDB_METHODS **pdb_method, const char *location)
+{
+ NTSTATUS nt_status;
+ struct smbpasswd_privates *privates;
+
+ if (!NT_STATUS_IS_OK(nt_status = make_pdb_methods(pdb_context->mem_ctx, pdb_method))) {
+ return nt_status;
+ }
+
+ (*pdb_method)->name = "smbpasswd";
+
+ (*pdb_method)->setsampwent = smbpasswd_setsampwent;
+ (*pdb_method)->endsampwent = smbpasswd_endsampwent;
+ (*pdb_method)->getsampwent = smbpasswd_getsampwent;
+ (*pdb_method)->getsampwnam = smbpasswd_getsampwnam;
+ (*pdb_method)->getsampwsid = smbpasswd_getsampwsid;
+ (*pdb_method)->add_sam_account = smbpasswd_add_sam_account;
+ (*pdb_method)->update_sam_account = smbpasswd_update_sam_account;
+ (*pdb_method)->delete_sam_account = smbpasswd_delete_sam_account;
+ (*pdb_method)->rename_sam_account = smbpasswd_rename_sam_account;
+
+ /* Setup private data and free function */
+
+ privates = TALLOC_ZERO_P(pdb_context->mem_ctx, struct smbpasswd_privates);
+
+ if (!privates) {
+ DEBUG(0, ("talloc() failed for smbpasswd private_data!\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* Store some config details */
+
+ if (location) {
+ privates->smbpasswd_file = talloc_strdup(pdb_context->mem_ctx, location);
+ } else {
+ privates->smbpasswd_file = talloc_strdup(pdb_context->mem_ctx, lp_smb_passwd_file());
+ }
+
+ if (!privates->smbpasswd_file) {
+ DEBUG(0, ("talloc_strdp() failed for storing smbpasswd location!\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ (*pdb_method)->private_data = privates;
+
+ (*pdb_method)->free_private_data = free_private_data;
+
+ return NT_STATUS_OK;
+}
+
+NTSTATUS pdb_smbpasswd_init(void)
+{
+ return smb_register_passdb(PASSDB_INTERFACE_VERSION, "smbpasswd", pdb_init_smbpasswd);
+}
projects / samba / blobdiff