-#ifdef SMB_PASSWD
/*
* Unix SMB/Netbios implementation. Version 1.9. SMB parameters and setup
- * Copyright (C) Andrew Tridgell 1992-1995 Modified by Jeremy Allison 1995.
+ * Copyright (C) Andrew Tridgell 1992-1998 Modified by Jeremy Allison 1995.
*
* 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
#include "includes.h"
-extern int DEBUGLEVEL;
+#ifdef USE_SMBPASS_DB
-int gotalarm;
+static int pw_file_lock_depth = 0;
+extern int DEBUGLEVEL;
-void
-gotalarm_sig()
-{
- gotalarm = 1;
-}
+static char s_readbuf[1024];
+
+/***************************************************************
+ Start to enumerate the smbpasswd list. Returns a void pointer
+ to ensure no modification outside this module.
+****************************************************************/
-int
-do_pw_lock(int fd, int waitsecs, int type)
+static void *startsmbfilepwent(BOOL update)
{
- struct flock lock;
- int ret;
-
- gotalarm = 0;
- signal(SIGALRM, SIGNAL_CAST gotalarm_sig);
-
- lock.l_type = type;
- lock.l_whence = SEEK_SET;
- lock.l_start = 0;
- lock.l_len = 1;
- lock.l_pid = 0;
-
- alarm(5);
- ret = fcntl(fd, F_SETLKW, &lock);
- alarm(0);
- signal(SIGALRM, SIGNAL_CAST SIG_DFL);
-
- if (gotalarm) {
- DEBUG(0, ("do_pw_lock: failed to %s SMB passwd file.\n",
- type == F_UNLCK ? "unlock" : "lock"));
- return -1;
- }
- return ret;
+ return startfilepwent(lp_smb_passwd_file(), s_readbuf, sizeof(s_readbuf),
+ &pw_file_lock_depth, update);
}
-int pw_file_lock(char *name, int type, int secs)
+/***************************************************************
+ End enumeration of the smbpasswd list.
+****************************************************************/
+
+static void endsmbfilepwent(void *vp)
{
- int fd = open(name, O_RDWR | O_CREAT, 0666);
- if (fd < 0)
- return (-1);
- if (do_pw_lock(fd, secs, type)) {
- close(fd);
- return -1;
- }
- return fd;
+ endfilepwent(vp, &pw_file_lock_depth);
}
-int pw_file_unlock(int fd)
+/*************************************************************************
+ Return the current position in the smbpasswd list as an SMB_BIG_UINT.
+ This must be treated as an opaque token.
+*************************************************************************/
+
+static SMB_BIG_UINT getsmbfilepwpos(void *vp)
{
- do_pw_lock(fd, 5, F_UNLCK);
- return close(fd);
+ return getfilepwpos(vp);
}
-/*
- * Routine to get the next 32 hex characters and turn them
- * into a 16 byte array.
- */
+/*************************************************************************
+ Set the current position in the smbpasswd list from an SMB_BIG_UINT.
+ This must be treated as an opaque token.
+*************************************************************************/
-static int gethexpwd(char *p, char *pwd)
+static BOOL setsmbfilepwpos(void *vp, SMB_BIG_UINT tok)
{
- int i;
- unsigned char lonybble, hinybble;
- char *hexchars = "0123456789ABCDEF";
- char *p1, *p2;
-
- for (i = 0; i < 32; i += 2) {
- hinybble = toupper(p[i]);
- lonybble = toupper(p[i + 1]);
-
- p1 = strchr(hexchars, hinybble);
- p2 = strchr(hexchars, lonybble);
- if (!p1 || !p2)
- return (False);
- hinybble = PTR_DIFF(p1, hexchars);
- lonybble = PTR_DIFF(p2, hexchars);
-
- pwd[i / 2] = (hinybble << 4) | lonybble;
- }
- return (True);
+ return setfilepwpos(vp, tok);
}
-/*
- * Routine to search the smbpasswd file for an entry matching the username.
- */
-struct smb_passwd *get_smbpwnam(char *name)
+/*************************************************************************
+ Routine to return the next entry in the smbpasswd list.
+
+ this function is non-static as it is called (exclusively and only)
+ from getsamfile21pwent().
+ *************************************************************************/
+struct smb_passwd *getsmbfilepwent(void *vp)
{
/* Static buffers we will return. */
static struct smb_passwd pw_buf;
- static pstring user_name;
+ static pstring unix_name;
static unsigned char smbpwd[16];
static unsigned char smbntpwd[16];
char linebuf[256];
- char readbuf[16 * 1024];
- unsigned char c;
- unsigned char *p;
- long uidval;
- long linebuf_len;
- FILE *fp;
- int lockfd;
- char *pfile = lp_smb_passwd_file();
-
- if (!*pfile) {
- DEBUG(0, ("No SMB password file set\n"));
- return (NULL);
- }
- DEBUG(10, ("get_smbpwnam: opening file %s\n", pfile));
+ char *p;
+ int uidval;
+ size_t linebuf_len;
- fp = fopen(pfile, "r");
-
- if (fp == NULL) {
- DEBUG(0, ("get_smbpwnam: unable to open file %s\n", pfile));
+ if (vp == NULL)
+ {
+ DEBUG(0,("getsmbfilepwent: Bad password file pointer.\n"));
return NULL;
}
- /* Set a 16k buffer to do more efficient reads */
- setvbuf(fp, readbuf, _IOFBF, sizeof(readbuf));
- if ((lockfd = pw_file_lock(pfile, F_RDLCK, 5)) < 0) {
- DEBUG(0, ("get_smbpwnam: unable to lock file %s\n", pfile));
- fclose(fp);
- return NULL;
- }
- /* make sure it is only rw by the owner */
- chmod(pfile, 0600);
+ pwdb_init_smb(&pw_buf);
+
+ pw_buf.acct_ctrl = ACB_NORMAL;
- /* We have a read lock on the file. */
/*
- * Scan the file, a line at a time and check if the name matches.
+ * Scan the file, a line at a time.
*/
- while (!feof(fp)) {
- linebuf[0] = '\0';
-
- fgets(linebuf, 256, fp);
- if (ferror(fp)) {
- fclose(fp);
- pw_file_unlock(lockfd);
- return NULL;
- }
- /*
- * 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, ("get_smbpwnam: got line |%s|\n", linebuf));
-#endif
- if ((linebuf[0] == 0) && feof(fp)) {
- DEBUG(4, ("get_smbpwnam: end of file reached\n"));
- break;
- }
+ while ((linebuf_len = getfileline(vp, linebuf, sizeof(linebuf))) > 0)
+ {
/*
* The line we have should be of the form :-
*
- * username:uid:[32hex bytes]:....other flags presently
+ * username:uid:32hex bytes:[Account type]:LCT-12345678....other flags presently
* ignored....
*
* or,
*
- * username:uid:[32hex bytes]:[32hex bytes]:....ignored....
+ * 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, ("get_smbpwnam: skipping comment or blank line\n"));
- continue;
- }
- p = (unsigned char *) strchr(linebuf, ':');
- if (p == NULL) {
- DEBUG(0, ("get_smbpwnam: 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....
*/
- strncpy(user_name, linebuf, PTR_DIFF(p, linebuf));
- user_name[PTR_DIFF(p, linebuf)] = '\0';
- if (!strequal(user_name, name))
- continue;
+ p = strncpyn(unix_name, linebuf, sizeof(unix_name), ':');
+
+ /* Go past ':' */
+ p++;
+
+ /* Get smb uid. */
+
+ p = Atoic( p, &uidval, ":");
+
+ pw_buf.unix_name = unix_name;
+ pw_buf.unix_uid = uidval;
- /* User name matches - get uid and password */
- p++; /* Go past ':' */
- if (!isdigit(*p)) {
- DEBUG(0, ("get_smbpwnam: malformed password entry (uid not number)\n"));
- fclose(fp);
- pw_file_unlock(lockfd);
- return NULL;
- }
- uidval = atoi((char *) p);
- while (*p && isdigit(*p))
- p++;
- if (*p != ':') {
- DEBUG(0, ("get_smbpwnam: malformed password entry (no : after uid)\n"));
- fclose(fp);
- pw_file_unlock(lockfd);
- return NULL;
- }
/*
* 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 (*p == '*' || *p == 'X') {
+
+ if (*p == '*' || *p == 'X')
+ {
/* Password deliberately invalid - end here. */
- DEBUG(10, ("get_smbpwnam: entry invalidated for user %s\n", user_name));
- fclose(fp);
- pw_file_unlock(lockfd);
- return NULL;
+ DEBUG(10, ("getsmbfilepwent: entry invalidated for unix user %s\n", unix_name));
+ pw_buf.smb_nt_passwd = NULL;
+ pw_buf.smb_passwd = NULL;
+ pw_buf.acct_ctrl |= ACB_DISABLED;
+ return &pw_buf;
}
- if (linebuf_len < (PTR_DIFF(p, linebuf) + 33)) {
- DEBUG(0, ("get_smbpwnam: malformed password entry (passwd too short)\n"));
- fclose(fp);
- pw_file_unlock(lockfd);
- return (False);
+
+ if (linebuf_len < (PTR_DIFF(p, linebuf) + 33))
+ {
+ DEBUG(0, ("getsmbfilepwent: malformed password entry (passwd too short)\n"));
+ continue;
}
- if (p[32] != ':') {
- DEBUG(0, ("get_smbpwnam: malformed password entry (no terminating :)\n"));
- fclose(fp);
- pw_file_unlock(lockfd);
- return NULL;
+
+ if (p[32] != ':')
+ {
+ DEBUG(0, ("getsmbfilepwent: malformed password entry (no terminating :)\n"));
+ continue;
}
- if (!strncasecmp((char *) p, "NO PASSWORD", 11)) {
+
+ if (!strncasecmp( p, "NO PASSWORD", 11))
+ {
pw_buf.smb_passwd = NULL;
- } else {
- if(!gethexpwd((char *)p,(char *)smbpwd)) {
- DEBUG(0, ("Malformed Lanman password entry (non hex chars)\n"));
- fclose(fp);
- pw_file_unlock(lockfd);
- return NULL;
+ pw_buf.acct_ctrl |= ACB_PWNOTREQ;
+ }
+ else
+ {
+ if (!pwdb_gethexpwd(p, (char *)smbpwd))
+ {
+ DEBUG(0, ("getsmbfilepwent: Malformed Lanman password entry (non hex chars)\n"));
+ continue;
}
pw_buf.smb_passwd = smbpwd;
}
- pw_buf.smb_name = user_name;
- pw_buf.smb_userid = uidval;
+
+ /*
+ * Now check if the NT compatible password is
+ * available.
+ */
pw_buf.smb_nt_passwd = NULL;
- /* 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)) && (p[32] == ':')) {
- if (*p != '*' && *p != 'X') {
- if(gethexpwd((char *)p,(char *)smbntpwd))
+ /* Move to the first character of the line after the lanman password. */
+ p += 33;
+ if ((linebuf_len >= (PTR_DIFF(p, linebuf) + 33)) && (p[32] == ':'))
+ {
+ if (*p != '*' && *p != 'X')
+ {
+ if(pwdb_gethexpwd(p,(char *)smbntpwd))
+ {
pw_buf.smb_nt_passwd = smbntpwd;
+ }
+ }
+ /* Move to the first character of the line after the NT password. */
+ p += 33;
+ }
+
+ DEBUG(5,("getsmbfilepwent: returning passwd entry for unix user %s, unix uid %d\n",
+ unix_name, uidval));
+
+ if (*p == '[')
+ {
+ pw_buf.acct_ctrl = pwdb_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. */
+ while (*p != ']' && *p != ':')
+ {
+ p++;
+ }
+ if (*p == ']')
+ {
+ p++;
+ }
+ if (*p == ':')
+ {
+ p++;
+ pw_buf.pass_last_set_time = pwdb_get_last_set_time(p);
+ }
+ }
+ 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.unix_name[strlen(pw_buf.unix_name) - 1] == '$')
+ {
+ pw_buf.acct_ctrl &= ~ACB_NORMAL;
+ pw_buf.acct_ctrl |= ACB_WSTRUST;
}
}
- fclose(fp);
- pw_file_unlock(lockfd);
- DEBUG(5, ("get_smbpwname: returning passwd entry for user %s, uid %d\n",
- user_name, uidval));
return &pw_buf;
}
- fclose(fp);
- pw_file_unlock(lockfd);
+ DEBUG(5,("getsmbfilepwent: end of file reached.\n"));
return NULL;
}
-#else
- void smbpass_dummy(void)
+
+/************************************************************************
+ Routine to add an entry to the smbpasswd file.
+*************************************************************************/
+
+static BOOL add_smbfilepwd_entry(struct smb_passwd *newpwd)
{
-} /* To avoid compiler complaints */
+ char *pfile = lp_smb_passwd_file();
+ struct smb_passwd *pwd = NULL;
+ FILE *fp = NULL;
+
+ int i;
+ int wr_len;
+
+ int fd;
+ int new_entry_length;
+ char *new_entry;
+ SMB_OFF_T offpos;
+ char *p;
+
+ /* Open the smbpassword file - for update. */
+ fp = startsmbfilepwent(True);
+
+ 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(fp)) != NULL) {
+ if (strequal(newpwd->unix_name, pwd->unix_name)) {
+ DEBUG(0, ("add_smbfilepwd_entry: entry with unix name %s already exists\n", pwd->unix_name));
+ endsmbfilepwent(fp);
+ return False;
+ }
+ }
+
+ /* 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->unix_name, pfile, strerror(errno)));
+ endsmbfilepwent(fp);
+ return False;
+ }
+
+ new_entry_length = strlen(newpwd->unix_name) + 1 + 15 + 1 + 32 + 1 + 32 + 1 + NEW_PW_FORMAT_SPACE_PADDED_LEN + 1 + 13 + 2;
+
+ if((new_entry = (char *)malloc( new_entry_length )) == NULL) {
+ DEBUG(0, ("add_smbfilepwd_entry(malloc): Failed to add entry for user %s to file %s. \
+Error was %s\n", newpwd->unix_name, pfile, strerror(errno)));
+ endsmbfilepwent(fp);
+ return False;
+ }
+
+ slprintf(new_entry, new_entry_length - 1, "%s:%u:", newpwd->unix_name, (unsigned)newpwd->unix_uid);
+ p = &new_entry[strlen(new_entry)];
+
+ if(newpwd->smb_passwd != NULL) {
+ for( i = 0; i < 16; i++) {
+ slprintf((char *)&p[i*2], new_entry_length - (p - new_entry) - 1, "%02X", newpwd->smb_passwd[i]);
+ }
+ } else {
+ i=0;
+ if(newpwd->acct_ctrl & ACB_PWNOTREQ)
+ safe_strcpy((char *)p, "NO PASSWORDXXXXXXXXXXXXXXXXXXXXX", new_entry_length - 1 - (p - new_entry));
+ else
+ safe_strcpy((char *)p, "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", new_entry_length - 1 - (p - new_entry));
+ }
+
+ p += 32;
+
+ *p++ = ':';
+
+ if(newpwd->smb_nt_passwd != NULL) {
+ for( i = 0; i < 16; i++) {
+ slprintf((char *)&p[i*2], new_entry_length - 1 - (p - new_entry), "%02X", newpwd->smb_nt_passwd[i]);
+ }
+ } else {
+ if(newpwd->acct_ctrl & ACB_PWNOTREQ)
+ safe_strcpy((char *)p, "NO PASSWORDXXXXXXXXXXXXXXXXXXXXX", new_entry_length - 1 - (p - new_entry));
+ else
+ safe_strcpy((char *)p, "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", new_entry_length - 1 - (p - new_entry));
+ }
+
+ p += 32;
+
+ *p++ = ':';
+
+ /* Add the account encoding and the last change time. */
+ slprintf((char *)p, new_entry_length - 1 - (p - new_entry), "%s:LCT-%08X:\n",
+ pwdb_encode_acct_ctrl(newpwd->acct_ctrl, NEW_PW_FORMAT_SPACE_PADDED_LEN), (uint32)time(NULL));
+
+#ifdef DEBUG_PASSWORD
+ DEBUG(100, ("add_smbfilepwd_entry(%d): new_entry_len %d entry_len %d made line |%s|",
+ fd, new_entry_length, strlen(new_entry), new_entry));
+#endif
+
+ if ((wr_len = write(fd, new_entry, strlen(new_entry))) != strlen(new_entry)) {
+ DEBUG(0, ("add_smbfilepwd_entry(write): %d Failed to add entry for user %s to file %s. \
+Error was %s\n", wr_len, newpwd->unix_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->unix_name, strerror(errno)));
+ }
+
+ endsmbfilepwent(fp);
+ free(new_entry);
+ return False;
+ }
+
+ free(new_entry);
+ endsmbfilepwent(fp);
+ 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 smb_passwd* pwd, BOOL override)
+{
+ /* Static buffers we will return. */
+ static pstring unix_name;
+
+ char linebuf[256];
+ char readbuf[1024];
+ unsigned char c;
+ fstring ascii_p16;
+ fstring encode_bits;
+ unsigned char *p = NULL;
+ size_t linebuf_len = 0;
+ FILE *fp;
+ int lockfd;
+ char *pfile = lp_smb_passwd_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;
+
+#ifdef DEBUG_PASSWORD
+ DEBUG(100,("mod_smbfilepwd_entry: password entries\n"));
+ dump_data(100, pwd->smb_passwd, 16);
+ dump_data(100, pwd->smb_nt_passwd, 16);
+#endif
+ 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 (!file_lock(lockfd, F_WRLCK, 5, &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.
+ */
+ while (!feof(fp)) {
+ pwd_seekpos = sys_ftell(fp);
+
+ linebuf[0] = '\0';
+
+ fgets(linebuf, sizeof(linebuf), fp);
+ if (ferror(fp)) {
+ file_unlock(lockfd, &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(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....
+ */
+ strncpy(unix_name, linebuf, PTR_DIFF(p, linebuf));
+ unix_name[PTR_DIFF(p, linebuf)] = '\0';
+ if (strequal(unix_name, pwd->unix_name)) {
+ found_entry = True;
+ break;
+ }
+ }
+
+ if (!found_entry) {
+ file_unlock(lockfd, &pw_file_lock_depth);
+ fclose(fp);
+ return False;
+ }
+
+ DEBUG(6, ("mod_smbfilepwd_entry: entry exists\n"));
+
+ /* User name matches - get uid and password */
+ p++; /* Go past ':' */
+
+ if (!isdigit(*p)) {
+ DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (uid not number)\n"));
+ file_unlock(lockfd, &pw_file_lock_depth);
+ fclose(fp);
+ return False;
+ }
+
+ while (*p && isdigit(*p))
+ p++;
+ if (*p != ':') {
+ DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (no : after uid)\n"));
+ file_unlock(lockfd, &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 (!override && (*p == '*' || *p == 'X')) {
+ /* Password deliberately invalid - end here. */
+ DEBUG(10, ("mod_smbfilepwd_entry: entry invalidated for unix user %s\n", unix_name));
+ file_unlock(lockfd, &pw_file_lock_depth);
+ fclose(fp);
+ return False;
+ }
+
+ if (linebuf_len < (PTR_DIFF(p, linebuf) + 33)) {
+ DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (passwd too short)\n"));
+ file_unlock(lockfd,&pw_file_lock_depth);
+ fclose(fp);
+ return (False);
+ }
+
+ if (p[32] != ':') {
+ DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (no terminating :)\n"));
+ file_unlock(lockfd,&pw_file_lock_depth);
+ fclose(fp);
+ return False;
+ }
+
+ if (!override && (*p == '*' || *p == 'X')) {
+ file_unlock(lockfd,&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 (passwd too short)\n"));
+ file_unlock(lockfd,&pw_file_lock_depth);
+ fclose(fp);
+ return (False);
+ }
+
+ if (p[32] != ':') {
+ DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (no terminating :)\n"));
+ file_unlock(lockfd,&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 both NT and lanman passwords are provided - reset password
+ * not required flag.
+ */
+
+ if(pwd->smb_passwd != NULL || pwd->smb_nt_passwd != NULL) {
+ /* Reqiure password in the future (should ACB_DISABLED also be reset?) */
+ pwd->acct_ctrl &= ~(ACB_PWNOTREQ);
+ }
+
+ 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, pwdb_encode_acct_ctrl(pwd->acct_ctrl, NEW_PW_FORMAT_SPACE_PADDED_LEN));
+ } else {
+ /*
+ * If using the old format and the ACB_DISABLED or
+ * ACB_PWNOTREQ are set then set the lanman and NT passwords to NULL
+ * here as we have no space to encode the change.
+ */
+ if(pwd->acct_ctrl & (ACB_DISABLED|ACB_PWNOTREQ)) {
+ pwd->smb_passwd = NULL;
+ pwd->smb_nt_passwd = NULL;
+ }
+ }
+
+ /* 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 */
+ if(pwd->smb_passwd != NULL) {
+ for (i = 0; i < 16; i++) {
+ slprintf(&ascii_p16[i*2], sizeof(fstring) - 1, "%02X", (uchar) pwd->smb_passwd[i]);
+ }
+ } else {
+ if(pwd->acct_ctrl & ACB_PWNOTREQ)
+ fstrcpy(ascii_p16, "NO PASSWORDXXXXXXXXXXXXXXXXXXXXX");
+ else
+ fstrcpy(ascii_p16, "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX");
+ }
+
+ /* Add on the NT md4 hash */
+ ascii_p16[32] = ':';
+ wr_len = 66;
+ if (pwd->smb_nt_passwd != NULL) {
+ for (i = 0; i < 16; i++) {
+ slprintf(&ascii_p16[(i*2)+33], sizeof(fstring) - 1, "%02X", (uchar) pwd->smb_nt_passwd[i]);
+ }
+ } else {
+ if(pwd->acct_ctrl & ACB_PWNOTREQ)
+ fstrcpy(&ascii_p16[33], "NO PASSWORDXXXXXXXXXXXXXXXXXXXXX");
+ else
+ fstrcpy(&ascii_p16[33], "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX");
+ }
+ 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. */
+
+ pwd->pass_last_set_time = time(NULL);
+
+ 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));
+ file_unlock(lockfd,&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));
+ file_unlock(lockfd,&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));
+ file_unlock(lockfd,&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));
+ file_unlock(lockfd,&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));
+ file_unlock(lockfd,&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));
+ file_unlock(lockfd,&pw_file_lock_depth);
+ fclose(fp);
+ return False;
+ }
+
+ file_unlock(lockfd,&pw_file_lock_depth);
+ fclose(fp);
+ return True;
+}
+
+static struct smb_passdb_ops file_ops = {
+ startsmbfilepwent,
+ endsmbfilepwent,
+ getsmbfilepwpos,
+ setsmbfilepwpos,
+ iterate_getsmbpwnam, /* In passdb.c */
+ iterate_getsmbpwuid, /* In passdb.c */
+ getsmbfilepwent,
+ add_smbfilepwd_entry,
+ mod_smbfilepwd_entry
+};
+
+struct smb_passdb_ops *file_initialise_password_db(void)
+{
+ return &file_ops;
+}
+
+#else
+ /* Do *NOT* make this function static. It breaks the compile on gcc. JRA */
+ void smbpass_dummy_function(void) { } /* stop some compilers complaining */
+#endif /* USE_SMBPASS_DB */
git.samba.org / samba.git / blobdiff