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Diffstat (limited to 'source3/lib/passcheck.c')
-rw-r--r-- | source3/lib/passcheck.c | 289 |
1 files changed, 0 insertions, 289 deletions
diff --git a/source3/lib/passcheck.c b/source3/lib/passcheck.c deleted file mode 100644 index bec64550595..00000000000 --- a/source3/lib/passcheck.c +++ /dev/null @@ -1,289 +0,0 @@ -/* - Unix SMB/Netbios implementation. - Version 1.9. - Password and authentication handling - Copyright (C) Andrew Tridgell 1992-1998 - - 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. -*/ - -#include "includes.h" - -extern int DEBUGLEVEL; -extern int Protocol; - -extern pstring scope; -extern pstring global_myname; -extern fstring global_myworkgroup; - - - -/**************************************************************************** -core of smb password checking routine. -****************************************************************************/ -static BOOL smb_pwd_check_ntlmv1(char *password, unsigned char *part_passwd, - unsigned char *c8, - uchar user_sess_key[16]) -{ - /* Finish the encryption of part_passwd. */ - unsigned char p24[24]; - - if (part_passwd == NULL) - DEBUG(10,("No password set - allowing access\n")); - /* No password set - always true ! */ - if (part_passwd == NULL) - return True; - - SMBOWFencrypt(part_passwd, c8, p24); - if (user_sess_key != NULL) - { - SMBsesskeygen_ntv1(part_passwd, NULL, user_sess_key); - } - -#if DEBUG_PASSWORD - DEBUG(100,("Part password (P16) was |")); - dump_data(100, part_passwd, 16); - DEBUG(100,("Password from client was |")); - dump_data(100, password, 24); - DEBUG(100,("Given challenge was |")); - dump_data(100, c8, 8); - DEBUG(100,("Value from encryption was |")); - dump_data(100, p24, 24); -#endif - return (memcmp(p24, password, 24) == 0); -} - -/**************************************************************************** -core of smb password checking routine. -****************************************************************************/ -static BOOL smb_pwd_check_ntlmv2(char *password, size_t pwd_len, - unsigned char *part_passwd, - unsigned char const *c8, - const char *user, const char *domain, - char *user_sess_key) -{ - /* Finish the encryption of part_passwd. */ - unsigned char kr[16]; - unsigned char resp[16]; - - if (part_passwd == NULL) - { - DEBUG(10,("No password set - allowing access\n")); - } - /* No password set - always true ! */ - if (part_passwd == NULL) - { - return True; - } - - ntv2_owf_gen(part_passwd, user, domain, kr); - SMBOWFencrypt_ntv2(kr, c8, 8, password+16, pwd_len-16, resp); - if (user_sess_key != NULL) - { - SMBsesskeygen_ntv2(kr, resp, user_sess_key); - } - -#if DEBUG_PASSWORD - DEBUG(100,("Part password (P16) was |")); - dump_data(100, part_passwd, 16); - DEBUG(100,("Password from client was |")); - dump_data(100, password, pwd_len); - DEBUG(100,("Given challenge was |")); - dump_data(100, c8, 8); - DEBUG(100,("Value from encryption was |")); - dump_data(100, resp, 16); -#endif - - return (memcmp(resp, password, 16) == 0); -} - -/**************************************************************************** - Do a specific test for an smb password being correct, given a smb_password and - the lanman and NT responses. -****************************************************************************/ -BOOL smb_password_ok(struct smb_passwd *smb_pass, uchar challenge[8], - const char *user, const char *domain, - uchar *lm_pass, size_t lm_pwd_len, - uchar *nt_pass, size_t nt_pwd_len, - uchar user_sess_key[16]) -{ - if (smb_pass == NULL) - { - return False; - } - - DEBUG(4,("Checking SMB password for user %s\n", - smb_pass->unix_name)); - - if (smb_pass->acct_ctrl & ACB_DISABLED) - { - DEBUG(3,("account for user %s was disabled.\n", - smb_pass->unix_name)); - return False; - } - - if (challenge == NULL) - { - DEBUG(1,("no challenge available - password failed\n")); - return False; - } - - if ((Protocol >= PROTOCOL_NT1) && (smb_pass->smb_nt_passwd != NULL)) - { - /* We have the NT MD4 hash challenge available - see if we can - use it (ie. does it exist in the smbpasswd file). - */ - if (lp_server_ntlmv2() != False && nt_pwd_len > 24) - { - DEBUG(4,("smb_password_ok: Check NTLMv2 password\n")); - if (smb_pwd_check_ntlmv2(nt_pass, nt_pwd_len, - (uchar *)smb_pass->smb_nt_passwd, - challenge, user, domain, - user_sess_key)) - { - return True; - } - } - if (lp_server_ntlmv2() != True && nt_pwd_len == 24) - { - DEBUG(4,("smb_password_ok: Check NT MD4 password\n")); - if (smb_pwd_check_ntlmv1((char *)nt_pass, - (uchar *)smb_pass->smb_nt_passwd, - challenge, - user_sess_key)) - { - DEBUG(4,("NT MD4 password check succeeded\n")); - return True; - } - } - DEBUG(4,("NT MD4 password check failed\n")); - } - - if (lp_server_ntlmv2() == True) - { - DEBUG(4,("Not checking LM MD4 password\n")); - return False; - } - - /* Try against the lanman password. smb_pass->smb_passwd == NULL means - no password, allow access. */ - - DEBUG(4,("Checking LM MD4 password\n")); - - if ((smb_pass->smb_passwd == NULL) && - (smb_pass->acct_ctrl & ACB_PWNOTREQ)) - { - DEBUG(4,("no password required for user %s\n", - smb_pass->unix_name)); - return True; - } - - if ((smb_pass->smb_passwd != NULL) && - smb_pwd_check_ntlmv1((char *)lm_pass, - (uchar *)smb_pass->smb_passwd, - challenge, NULL)) - { - DEBUG(4,("LM MD4 password check succeeded\n")); - return(True); - } - - DEBUG(4,("LM MD4 password check failed\n")); - - return False; -} - - -/**************************************************************************** -check if a username/password is OK assuming the password is a 24 byte -SMB hash -return True if the password is correct, False otherwise -****************************************************************************/ -BOOL pass_check_smb(struct smb_passwd *smb_pass, char *domain, uchar *chal, - uchar *lm_pwd, size_t lm_pwd_len, - uchar *nt_pwd, size_t nt_pwd_len, - struct passwd *pwd, uchar user_sess_key[16]) -{ - const struct passwd *pass; - struct passwd pw; - char *user = NULL; - - if (smb_pass == NULL) - { - DEBUG(3,("Couldn't find user %s in smb_passwd file.\n", user)); - return False; - } - - user = smb_pass->unix_name; - - if (lm_pwd == NULL || nt_pwd == NULL) - { - return False; - } - - if (pwd != NULL && user == NULL) - { - pass = (struct passwd *) pwd; - user = pass->pw_name; - } - else - { - pass = Get_Pwnam(user,True); - if (pass == NULL) - { - DEBUG(3,("Couldn't find user %s\n",user)); - return False; - } - memcpy(&pw, pass, sizeof(struct passwd)); - pass = &pw; - } - - /* Quit if the account was disabled. */ - if (smb_pass->acct_ctrl & ACB_DISABLED) { - DEBUG(3,("account for user %s was disabled.\n", user)); - return False; - } - - /* Ensure the uid's match */ - if (smb_pass->unix_uid != pass->pw_uid) - { - DEBUG(3,("Error : UNIX (%d) and SMB (%d) uids in password files do not match !\n", pass->pw_uid, smb_pass->unix_uid)); - return False; - } - - if (lm_pwd[0] == '\0' && IS_BITS_SET_ALL(smb_pass->acct_ctrl, ACB_PWNOTREQ) && lp_null_passwords()) - { - DEBUG(3,("account for user %s has no password and null passwords are allowed.\n", smb_pass->unix_name)); - return(True); - } - - if (smb_password_ok(smb_pass, chal, user, domain, - lm_pwd, lm_pwd_len, - nt_pwd, nt_pwd_len, - user_sess_key)) - { - if (user_sess_key != NULL) - { -#ifdef DEBUG_PASSWORD - DEBUG(100,("user session key: ")); - dump_data(100, user_sess_key, 16); -#endif - } - return(True); - } - - DEBUG(3,("Error pass_check_smb failed\n")); - return False; -} - |