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+/*
+ Unix SMB/CIFS implementation.
+
+ smbpasswd file format routines
+
+ Copyright (C) Andrew Tridgell 1992-1998
+ Modified by Jeremy Allison 1995.
+ Modified by Gerald (Jerry) Carter 2000-2001
+ Copyright (C) Tim Potter 2001
+
+ 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.
+*/
+
+/*! \file lib/smbpasswd.c
+
+ The smbpasswd file is used to store encrypted passwords in a similar
+ fashion to the /etc/passwd file. The format is colon separated fields
+ with one user per line like so:
+
+ <username>:<uid>:<lanman hash>:<nt hash>:<acb info>:<last change time>
+
+ The username and uid must correspond to an entry in the /etc/passwd
+ file. The lanman and nt password hashes are 32 hex digits corresponding
+ to the 16-byte lanman and nt hashes respectively.
+
+ The password last change time is stored as a string of the format
+ LCD-<change time> where the change time is expressed as an
+
+ 'N' No password
+ 'D' Disabled
+ 'H' Homedir required
+ 'T' Temp account.
+ 'U' User account (normal)
+ 'M' MNS logon user account - what is this ?
+ 'W' Workstation account
+ 'S' Server account
+ 'L' Locked account
+ 'X' No Xpiry on password
+ 'I' Interdomain trust account
+
+*/
+
+#include "includes.h"
+
+/*! Convert 32 hex characters into a 16 byte array. */
+
+BOOL smbpasswd_gethexpwd(char *p, unsigned char *pwd)
+{
+ int i;
+ unsigned char lonybble, hinybble;
+ char *hexchars = "0123456789ABCDEF";
+ char *p1, *p2;
+
+ if (!p) return (False);
+
+ for (i = 0; i < 32; i += 2)
+ {
+ hinybble = toupper(p[i]);
+ lonybble = toupper(p[i + 1]);
+
+ p1 = strchr_m(hexchars, hinybble);
+ p2 = strchr_m(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);
+}
+
+/*! Convert a 16-byte array into 32 hex characters. */
+
+void smbpasswd_sethexpwd(fstring p, unsigned char *pwd, uint16 acb_info)
+{
+ if (pwd != NULL) {
+ int i;
+ for (i = 0; i < 16; i++)
+ slprintf(&p[i*2], 3, "%02X", pwd[i]);
+ } else {
+ if (acb_info & ACB_PWNOTREQ)
+ safe_strcpy(p, "NO PASSWORDXXXXXXXXXXXXXXXXXXXXX", 33);
+ else
+ safe_strcpy(p, "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", 33);
+ }
+}
+
+/*! Decode the account control bits (ACB) info from a string. */
+
+uint16 smbpasswd_decode_acb_info(const char *p)
+{
+ uint16 acb_info = 0;
+ BOOL finished = False;
+
+ /*
+ * Check if the account type bits have been encoded after the
+ * NT password (in the form [NDHTUWSLXI]).
+ */
+
+ if (*p != '[') return 0;
+
+ for (p++; *p && !finished; p++)
+ {
+ switch (*p) {
+ case 'N': /* 'N'o password. */
+ acb_info |= ACB_PWNOTREQ;
+ break;
+ case 'D': /* 'D'isabled. */
+ acb_info |= ACB_DISABLED;
+ break;
+ case 'H': /* 'H'omedir required. */
+ acb_info |= ACB_HOMDIRREQ;
+ break;
+ case 'T': /* 'T'emp account. */
+ acb_info |= ACB_TEMPDUP;
+ break;
+ case 'U': /* 'U'ser account (normal). */
+ acb_info |= ACB_NORMAL;
+ break;
+ case 'M': /* 'M'NS logon user account. What is this ? */
+ acb_info |= ACB_MNS;
+ break;
+ case 'W': /* 'W'orkstation account. */
+ acb_info |= ACB_WSTRUST;
+ break;
+ case 'S': /* 'S'erver account. */
+ acb_info |= ACB_SVRTRUST;
+ break;
+ case 'L': /* 'L'ocked account. */
+ acb_info |= ACB_AUTOLOCK;
+ break;
+ case 'X': /* No 'X'piry on password */
+ acb_info |= ACB_PWNOEXP;
+ break;
+ case 'I': /* 'I'nterdomain trust account. */
+ acb_info |= ACB_DOMTRUST;
+ break;
+
+ case ' ':
+ break;
+ case ':':
+ case '\n':
+ case '\0':
+ case ']':
+ default:
+ finished = True;
+ break;
+ }
+ }
+
+ return acb_info;
+}
+
+/*! Encode account control bits (ACBs) into a string. */
+
+char *smbpasswd_encode_acb_info(uint16 acb_info)
+{
+ static fstring acct_str;
+ size_t i = 0;
+
+ acct_str[i++] = '[';
+
+ if (acb_info & ACB_PWNOTREQ ) acct_str[i++] = 'N';
+ if (acb_info & ACB_DISABLED ) acct_str[i++] = 'D';
+ if (acb_info & ACB_HOMDIRREQ) acct_str[i++] = 'H';
+ if (acb_info & ACB_TEMPDUP ) acct_str[i++] = 'T';
+ if (acb_info & ACB_NORMAL ) acct_str[i++] = 'U';
+ if (acb_info & ACB_MNS ) acct_str[i++] = 'M';
+ if (acb_info & ACB_WSTRUST ) acct_str[i++] = 'W';
+ if (acb_info & ACB_SVRTRUST ) acct_str[i++] = 'S';
+ if (acb_info & ACB_AUTOLOCK ) acct_str[i++] = 'L';
+ if (acb_info & ACB_PWNOEXP ) acct_str[i++] = 'X';
+ if (acb_info & ACB_DOMTRUST ) acct_str[i++] = 'I';
+
+ for ( ; i < NEW_PW_FORMAT_SPACE_PADDED_LEN - 2 ; i++ )
+ acct_str[i] = ' ';
+
+ i = NEW_PW_FORMAT_SPACE_PADDED_LEN - 2;
+ acct_str[i++] = ']';
+ acct_str[i++] = '\0';
+
+ return acct_str;
+}