2 Unix SMB/CIFS implementation.
4 smbpasswd file format routines
6 Copyright (C) Andrew Tridgell 1992-1998
7 Modified by Jeremy Allison 1995.
8 Modified by Gerald (Jerry) Carter 2000-2001
9 Copyright (C) Tim Potter 2001
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 /*! \file lib/smbpasswd.c
28 The smbpasswd file is used to store encrypted passwords in a similar
29 fashion to the /etc/passwd file. The format is colon separated fields
30 with one user per line like so:
32 <username>:<uid>:<lanman hash>:<nt hash>:<acb info>:<last change time>
34 The username and uid must correspond to an entry in the /etc/passwd
35 file. The lanman and nt password hashes are 32 hex digits corresponding
36 to the 16-byte lanman and nt hashes respectively.
38 The password last change time is stored as a string of the format
39 LCD-<change time> where the change time is expressed as an
45 'U' User account (normal)
46 'M' MNS logon user account - what is this ?
47 'W' Workstation account
50 'X' No Xpiry on password
51 'I' Interdomain trust account
57 /*! Convert 32 hex characters into a 16 byte array. */
59 BOOL smbpasswd_gethexpwd(char *p, unsigned char *pwd)
62 unsigned char lonybble, hinybble;
63 const char *hexchars = "0123456789ABCDEF";
66 if (!p) return (False);
68 for (i = 0; i < 32; i += 2)
70 hinybble = toupper(p[i]);
71 lonybble = toupper(p[i + 1]);
73 p1 = strchr_m(hexchars, hinybble);
74 p2 = strchr_m(hexchars, lonybble);
81 hinybble = PTR_DIFF(p1, hexchars);
82 lonybble = PTR_DIFF(p2, hexchars);
84 pwd[i / 2] = (hinybble << 4) | lonybble;
89 /*! Convert a 16-byte array into 32 hex characters. */
91 void smbpasswd_sethexpwd(fstring p, unsigned char *pwd, uint16 acb_info)
95 for (i = 0; i < 16; i++)
96 slprintf(&p[i*2], 3, "%02X", pwd[i]);
98 if (acb_info & ACB_PWNOTREQ)
99 safe_strcpy(p, "NO PASSWORDXXXXXXXXXXXXXXXXXXXXX", 33);
101 safe_strcpy(p, "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", 33);
105 /*! Decode the account control bits (ACB) info from a string. */
107 uint16 smbpasswd_decode_acb_info(const char *p)
110 BOOL finished = False;
113 * Check if the account type bits have been encoded after the
114 * NT password (in the form [NDHTUWSLXI]).
117 if (*p != '[') return 0;
119 for (p++; *p && !finished; p++)
122 case 'N': /* 'N'o password. */
123 acb_info |= ACB_PWNOTREQ;
125 case 'D': /* 'D'isabled. */
126 acb_info |= ACB_DISABLED;
128 case 'H': /* 'H'omedir required. */
129 acb_info |= ACB_HOMDIRREQ;
131 case 'T': /* 'T'emp account. */
132 acb_info |= ACB_TEMPDUP;
134 case 'U': /* 'U'ser account (normal). */
135 acb_info |= ACB_NORMAL;
137 case 'M': /* 'M'NS logon user account. What is this ? */
140 case 'W': /* 'W'orkstation account. */
141 acb_info |= ACB_WSTRUST;
143 case 'S': /* 'S'erver account. */
144 acb_info |= ACB_SVRTRUST;
146 case 'L': /* 'L'ocked account. */
147 acb_info |= ACB_AUTOLOCK;
149 case 'X': /* No 'X'piry on password */
150 acb_info |= ACB_PWNOEXP;
152 case 'I': /* 'I'nterdomain trust account. */
153 acb_info |= ACB_DOMTRUST;
171 /*! Encode account control bits (ACBs) into a string. */
173 char *smbpasswd_encode_acb_info(uint16 acb_info)
175 static fstring acct_str;
180 if (acb_info & ACB_PWNOTREQ ) acct_str[i++] = 'N';
181 if (acb_info & ACB_DISABLED ) acct_str[i++] = 'D';
182 if (acb_info & ACB_HOMDIRREQ) acct_str[i++] = 'H';
183 if (acb_info & ACB_TEMPDUP ) acct_str[i++] = 'T';
184 if (acb_info & ACB_NORMAL ) acct_str[i++] = 'U';
185 if (acb_info & ACB_MNS ) acct_str[i++] = 'M';
186 if (acb_info & ACB_WSTRUST ) acct_str[i++] = 'W';
187 if (acb_info & ACB_SVRTRUST ) acct_str[i++] = 'S';
188 if (acb_info & ACB_AUTOLOCK ) acct_str[i++] = 'L';
189 if (acb_info & ACB_PWNOEXP ) acct_str[i++] = 'X';
190 if (acb_info & ACB_DOMTRUST ) acct_str[i++] = 'I';
192 for ( ; i < NEW_PW_FORMAT_SPACE_PADDED_LEN - 2 ; i++ )
195 i = NEW_PW_FORMAT_SPACE_PADDED_LEN - 2;
197 acct_str[i++] = '\0';