1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/*
Unix SMB/Netbios implementation.
Version 1.9.
change a password in a local smbpasswd file
Copyright (C) Andrew Tridgell 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"
/*************************************************************
add a new user to the local smbpasswd file
*************************************************************/
static BOOL add_new_user(char *user_name, uid_t uid, BOOL trust_account,
BOOL disable_user, BOOL set_no_password,
uchar *new_p16, uchar *new_nt_p16)
{
struct smb_passwd new_smb_pwent;
/* Create a new smb passwd entry and set it to the given password. */
new_smb_pwent.smb_userid = uid;
new_smb_pwent.smb_name = user_name;
new_smb_pwent.smb_passwd = NULL;
new_smb_pwent.smb_nt_passwd = NULL;
new_smb_pwent.acct_ctrl = (trust_account ? ACB_WSTRUST : ACB_NORMAL);
if(disable_user) {
new_smb_pwent.acct_ctrl |= ACB_DISABLED;
} else if (set_no_password) {
new_smb_pwent.acct_ctrl |= ACB_PWNOTREQ;
} else {
new_smb_pwent.smb_passwd = new_p16;
new_smb_pwent.smb_nt_passwd = new_nt_p16;
}
return add_smbpwd_entry(&new_smb_pwent);
}
/*************************************************************
change a password entry in the local smbpasswd file
*************************************************************/
BOOL local_password_change(char *user_name, BOOL trust_account, BOOL add_user,
BOOL enable_user, BOOL disable_user, BOOL set_no_password,
char *new_passwd,
char *err_str, size_t err_str_len,
char *msg_str, size_t msg_str_len)
{
struct passwd *pwd;
void *vp;
struct smb_passwd *smb_pwent;
uchar new_p16[16];
uchar new_nt_p16[16];
*err_str = '\0';
*msg_str = '\0';
pwd = getpwnam(user_name);
/*
* Check for a machine account.
*/
if(trust_account && !pwd) {
slprintf(err_str, err_str_len - 1, "User %s does not \
exist in system password file (usually /etc/passwd). Cannot add machine \
account without a valid system user.\n", user_name);
return False;
}
/* Calculate the MD4 hash (NT compatible) of the new password. */
nt_lm_owf_gen(new_passwd, new_nt_p16, new_p16);
/*
* Open the smbpaswd file.
*/
vp = startsmbpwent(True);
if (!vp && errno == ENOENT) {
FILE *fp;
slprintf(msg_str,msg_str_len-1,
"smbpasswd file did not exist - attempting to create it.\n");
fp = fopen(lp_smb_passwd_file(), "w");
if (fp) {
fprintf(fp, "# Samba SMB password file\n");
fclose(fp);
vp = startsmbpwent(True);
}
}
if (!vp) {
slprintf(err_str, err_str_len-1, "Cannot open file %s. Error was %s\n",
lp_smb_passwd_file(), strerror(errno) );
return False;
}
/* Get the smb passwd entry for this user */
smb_pwent = getsmbpwnam(user_name);
if (smb_pwent == NULL) {
if(add_user == False) {
slprintf(err_str, err_str_len-1,
"Failed to find entry for user %s.\n", pwd->pw_name);
endsmbpwent(vp);
return False;
}
if (add_new_user(user_name, pwd->pw_uid, trust_account, disable_user,
set_no_password, new_p16, new_nt_p16)) {
slprintf(msg_str, msg_str_len-1, "Added user %s.\n", user_name);
endsmbpwent(vp);
return True;
} else {
slprintf(err_str, err_str_len-1, "Failed to add entry for user %s.\n", user_name);
endsmbpwent(vp);
return False;
}
} else {
/* the entry already existed */
add_user = False;
}
/*
* We are root - just write the new password
* and the valid last change time.
*/
if(disable_user) {
smb_pwent->acct_ctrl |= ACB_DISABLED;
} else if (enable_user) {
if(smb_pwent->smb_passwd == NULL) {
smb_pwent->smb_passwd = new_p16;
smb_pwent->smb_nt_passwd = new_nt_p16;
}
smb_pwent->acct_ctrl &= ~ACB_DISABLED;
} else if (set_no_password) {
smb_pwent->acct_ctrl |= ACB_PWNOTREQ;
/* This is needed to preserve ACB_PWNOTREQ in mod_smbfilepwd_entry */
smb_pwent->smb_passwd = NULL;
smb_pwent->smb_nt_passwd = NULL;
} else {
smb_pwent->acct_ctrl &= ~ACB_PWNOTREQ;
smb_pwent->smb_passwd = new_p16;
smb_pwent->smb_nt_passwd = new_nt_p16;
}
if(mod_smbpwd_entry(smb_pwent,True) == False) {
slprintf(err_str, err_str_len-1, "Failed to modify entry for user %s.\n",
pwd->pw_name);
endsmbpwent(vp);
return False;
}
endsmbpwent(vp);
return True;
}
|
