summaryrefslogtreecommitdiff
path: root/source3/nsswitch/winbindd_creds.c
blob: c38b915e9f578fccb08292f2781409ac1d2ca253 (plain)
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
/*
   Unix SMB/CIFS implementation.

   Winbind daemon - cached credentials funcions

   Copyright (C) Guenther Deschner 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/>.
*/

#include "includes.h"
#include "winbindd.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_WINBIND

#define MAX_CACHED_LOGINS 10

NTSTATUS winbindd_get_creds(struct winbindd_domain *domain,
			    TALLOC_CTX *mem_ctx,
			    const DOM_SID *sid,
			    NET_USER_INFO_3 **info3,
			    const uint8 *cached_nt_pass[NT_HASH_LEN],
			    const uint8 *cred_salt[NT_HASH_LEN])
{
	NET_USER_INFO_3 *info;
	NTSTATUS status;

	status = wcache_get_creds(domain, mem_ctx, sid, cached_nt_pass, cred_salt);
	if (!NT_STATUS_IS_OK(status)) {
		return status;
	}

	info = netsamlogon_cache_get(mem_ctx, sid);
	if (info == NULL) {
		return NT_STATUS_OBJECT_NAME_NOT_FOUND;
	}

	*info3 = info;

	return NT_STATUS_OK;
}


NTSTATUS winbindd_store_creds(struct winbindd_domain *domain,
			      TALLOC_CTX *mem_ctx, 
			      const char *user, 
			      const char *pass, 
			      NET_USER_INFO_3 *info3,
			      const DOM_SID *user_sid)
{
	NTSTATUS status;
	uchar nt_pass[NT_HASH_LEN];
	DOM_SID cred_sid;

	if (info3 != NULL) {
	
		DOM_SID sid;
		sid_copy(&sid, &(info3->dom_sid.sid));
		sid_append_rid(&sid, info3->user_rid);
		sid_copy(&cred_sid, &sid);
		info3->user_flgs |= LOGON_CACHED_ACCOUNT;
		
	} else if (user_sid != NULL) {
	
		sid_copy(&cred_sid, user_sid);
		
	} else if (user != NULL) {
	
		/* do lookup ourself */

		enum lsa_SidType type;
		
		if (!lookup_cached_name(mem_ctx,
	        	                domain->name,
					user,
					&cred_sid,
					&type)) {
			return NT_STATUS_NO_SUCH_USER;
		}
	} else {
		return NT_STATUS_INVALID_PARAMETER;
	}
		
	if (pass) {

		int count = 0;

		status = wcache_count_cached_creds(domain, &count);
		if (!NT_STATUS_IS_OK(status)) {
			return status;
		}

		DEBUG(11,("we have %d cached creds\n", count));

		if (count + 1 > MAX_CACHED_LOGINS) {

			DEBUG(10,("need to delete the oldest cached login\n"));

			status = wcache_remove_oldest_cached_creds(domain, &cred_sid);
			if (!NT_STATUS_IS_OK(status)) {
				DEBUG(10,("failed to remove oldest cached cred: %s\n", 
					nt_errstr(status)));
				return status;
			}
		}

		E_md4hash(pass, nt_pass);

#if DEBUG_PASSWORD
		dump_data(100, nt_pass, NT_HASH_LEN);
#endif

		status = wcache_save_creds(domain, mem_ctx, &cred_sid, nt_pass);
		if (!NT_STATUS_IS_OK(status)) {
			return status;
		}
	}

	if (info3 != NULL && user != NULL) {
		if (!netsamlogon_cache_store(user, info3)) {
			return NT_STATUS_ACCESS_DENIED;
		}
	}

	return NT_STATUS_OK;
}

NTSTATUS winbindd_update_creds_by_info3(struct winbindd_domain *domain,
				        TALLOC_CTX *mem_ctx,
				        const char *user,
				        const char *pass,
				        NET_USER_INFO_3 *info3)
{
	return winbindd_store_creds(domain, mem_ctx, user, pass, info3, NULL);
}

NTSTATUS winbindd_update_creds_by_sid(struct winbindd_domain *domain,
				      TALLOC_CTX *mem_ctx,
				      const DOM_SID *sid,
				      const char *pass)
{
	return winbindd_store_creds(domain, mem_ctx, NULL, pass, NULL, sid);
}

NTSTATUS winbindd_update_creds_by_name(struct winbindd_domain *domain,
				       TALLOC_CTX *mem_ctx,
				       const char *user,
				       const char *pass)
{
	return winbindd_store_creds(domain, mem_ctx, user, pass, NULL, NULL);
}