| 1 | /*
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| 2 | Unix SMB/CIFS implementation.
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| 3 | smbpasswd file format routines
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| 4 |
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| 5 | Copyright (C) Andrew Tridgell 1992-1998
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| 6 | Modified by Jeremy Allison 1995.
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| 7 | Modified by Gerald (Jerry) Carter 2000-2001
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| 8 | Copyright (C) Tim Potter 2001
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| 9 | Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
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| 10 | Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2005
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| 11 |
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| 12 | This program is free software; you can redistribute it and/or modify
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| 13 | it under the terms of the GNU General Public License as published by
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| 14 | the Free Software Foundation; either version 3 of the License, or
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| 15 | (at your option) any later version.
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| 16 |
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| 17 | This program is distributed in the hope that it will be useful,
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| 18 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 20 | GNU General Public License for more details.
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| 21 |
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| 22 | You should have received a copy of the GNU General Public License
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| 23 | along with this program. If not, see <http://www.gnu.org/licenses/>.
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| 24 | */
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| 25 |
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| 26 | /*! \file lib/smbpasswd.c
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| 27 |
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| 28 | The smbpasswd file is used to store encrypted passwords in a similar
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| 29 | fashion to the /etc/passwd file. The format is colon separated fields
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| 30 | with one user per line like so:
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| 31 |
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| 32 | <username>:<uid>:<lanman hash>:<nt hash>:<acb info>:<last change time>
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| 33 |
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| 34 | The username and uid must correspond to an entry in the /etc/passwd
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| 35 | file. The lanman and nt password hashes are 32 hex digits corresponding
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| 36 | to the 16-byte lanman and nt hashes respectively.
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| 37 |
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| 38 | The password last change time is stored as a string of the format
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| 39 | LCD-<change time> where the change time is expressed as an
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| 40 |
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| 41 | 'N' No password
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| 42 | 'D' Disabled
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| 43 | 'H' Homedir required
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| 44 | 'T' Temp account.
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| 45 | 'U' User account (normal)
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| 46 | 'M' MNS logon user account - what is this ?
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| 47 | 'W' Workstation account
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| 48 | 'S' Server account
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| 49 | 'L' Locked account
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| 50 | 'X' No Xpiry on password
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| 51 | 'I' Interdomain trust account
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| 52 |
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| 53 | */
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| 54 |
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| 55 | #include "includes.h"
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| 56 | #include "system/locale.h"
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| 57 | #include "lib/samba3/samba3.h"
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| 58 |
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| 59 | /*! Convert 32 hex characters into a 16 byte array. */
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| 60 |
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| 61 | struct samr_Password *smbpasswd_gethexpwd(TALLOC_CTX *mem_ctx, const char *p)
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| 62 | {
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| 63 | int i;
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| 64 | unsigned char lonybble, hinybble;
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| 65 | const char *hexchars = "0123456789ABCDEF";
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| 66 | const char *p1, *p2;
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| 67 | struct samr_Password *pwd = talloc(mem_ctx, struct samr_Password);
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| 68 |
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| 69 | if (!p) return NULL;
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| 70 |
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| 71 | for (i = 0; i < (sizeof(pwd->hash) * 2); i += 2)
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| 72 | {
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| 73 | hinybble = toupper(p[i]);
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| 74 | lonybble = toupper(p[i + 1]);
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| 75 |
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| 76 | p1 = strchr_m(hexchars, hinybble);
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| 77 | p2 = strchr_m(hexchars, lonybble);
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| 78 |
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| 79 | if (!p1 || !p2) {
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| 80 | return NULL;
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| 81 | }
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| 82 |
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| 83 | hinybble = PTR_DIFF(p1, hexchars);
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| 84 | lonybble = PTR_DIFF(p2, hexchars);
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| 85 |
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| 86 | pwd->hash[i / 2] = (hinybble << 4) | lonybble;
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| 87 | }
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| 88 | return pwd;
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| 89 | }
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| 90 |
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| 91 | /*! Convert a 16-byte array into 32 hex characters. */
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| 92 | char *smbpasswd_sethexpwd(TALLOC_CTX *mem_ctx, struct samr_Password *pwd, uint16_t acb_info)
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| 93 | {
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| 94 | char *p;
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| 95 | if (pwd != NULL) {
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| 96 | int i;
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| 97 | p = talloc_array(mem_ctx, char, 33);
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| 98 | if (!p) {
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| 99 | return NULL;
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| 100 | }
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| 101 |
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| 102 | for (i = 0; i < sizeof(pwd->hash); i++)
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| 103 | slprintf(&p[i*2], 3, "%02X", pwd->hash[i]);
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| 104 | } else {
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| 105 | if (acb_info & ACB_PWNOTREQ)
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| 106 | p = talloc_strdup(mem_ctx, "NO PASSWORDXXXXXXXXXXXXXXXXXXXXX");
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| 107 | else
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| 108 | p = talloc_strdup(mem_ctx, "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX");
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| 109 | }
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| 110 | return p;
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| 111 | }
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| 112 |
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| 113 | /*! Encode account control bits (ACBs) into a string. */
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| 114 |
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| 115 | char *smbpasswd_encode_acb_info(TALLOC_CTX *mem_ctx, uint16_t acb_info)
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| 116 | {
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| 117 | char *acct_str = talloc_array(mem_ctx, char, 35);
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| 118 | size_t i = 0;
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| 119 |
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| 120 | acct_str[i++] = '[';
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| 121 |
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| 122 | if (acb_info & ACB_PWNOTREQ ) acct_str[i++] = 'N';
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| 123 | if (acb_info & ACB_DISABLED ) acct_str[i++] = 'D';
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| 124 | if (acb_info & ACB_HOMDIRREQ) acct_str[i++] = 'H';
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| 125 | if (acb_info & ACB_TEMPDUP ) acct_str[i++] = 'T';
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| 126 | if (acb_info & ACB_NORMAL ) acct_str[i++] = 'U';
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| 127 | if (acb_info & ACB_MNS ) acct_str[i++] = 'M';
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| 128 | if (acb_info & ACB_WSTRUST ) acct_str[i++] = 'W';
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| 129 | if (acb_info & ACB_SVRTRUST ) acct_str[i++] = 'S';
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| 130 | if (acb_info & ACB_AUTOLOCK ) acct_str[i++] = 'L';
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| 131 | if (acb_info & ACB_PWNOEXP ) acct_str[i++] = 'X';
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| 132 | if (acb_info & ACB_DOMTRUST ) acct_str[i++] = 'I';
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| 133 |
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| 134 | acct_str[i++] = ']';
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| 135 | acct_str[i++] = '\0';
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| 136 |
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| 137 | return acct_str;
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| 138 | }
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