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Diffstat (limited to 'source4/lib/samba3/smbpasswd.c')
| -rw-r--r-- | source4/lib/samba3/smbpasswd.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/source4/lib/samba3/smbpasswd.c b/source4/lib/samba3/smbpasswd.c new file mode 100644 index 0000000..ae361b7 --- /dev/null +++ b/source4/lib/samba3/smbpasswd.c @@ -0,0 +1,111 @@ +/* + 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 + Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005 + Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2005 + + 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 3 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, see <http://www.gnu.org/licenses/>. +*/ + +/*! \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" +#include "system/locale.h" +#include "lib/samba3/samba3.h" + +/*! Convert 32 hex characters into a 16 byte array. */ + +struct samr_Password *smbpasswd_gethexpwd(TALLOC_CTX *mem_ctx, const char *p) +{ + int i; + unsigned char lonybble, hinybble; + const char *hexchars = "0123456789ABCDEF"; + const char *p1, *p2; + struct samr_Password *pwd = talloc(mem_ctx, struct samr_Password); + + if (!p) return NULL; + + for (i = 0; i < (sizeof(pwd->hash) * 2); 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 NULL; + } + + hinybble = PTR_DIFF(p1, hexchars); + lonybble = PTR_DIFF(p2, hexchars); + + pwd->hash[i / 2] = (hinybble << 4) | lonybble; + } + return pwd; +} + +/*! Convert a 16-byte array into 32 hex characters. */ +char *smbpasswd_sethexpwd(TALLOC_CTX *mem_ctx, struct samr_Password *pwd, uint16_t acb_info) +{ + char *p; + if (pwd != NULL) { + int i; + p = talloc_array(mem_ctx, char, 33); + if (!p) { + return NULL; + } + + for (i = 0; i < sizeof(pwd->hash); i++) + slprintf(&p[i*2], 3, "%02X", pwd->hash[i]); + } else { + if (acb_info & ACB_PWNOTREQ) + p = talloc_strdup(mem_ctx, "NO PASSWORDXXXXXXXXXXXXXXXXXXXXX"); + else + p = talloc_strdup(mem_ctx, "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"); + } + return p; +} |