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Diffstat (limited to 'source4/lib/smbpasswd.c')
| -rw-r--r-- | source4/lib/smbpasswd.c | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/source4/lib/smbpasswd.c b/source4/lib/smbpasswd.c new file mode 100644 index 0000000000..92ae1ffea2 --- /dev/null +++ b/source4/lib/smbpasswd.c @@ -0,0 +1,200 @@ +/* + 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; + const 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; +} |