/src/samba/source3/lib/id_cache.c
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1 | | /* |
2 | | * Samba Unix/Linux SMB client library |
3 | | * |
4 | | * Copyright (C) Gregor Beck 2011 |
5 | | * |
6 | | * This program is free software; you can redistribute it and/or modify |
7 | | * it under the terms of the GNU General Public License as published by |
8 | | * the Free Software Foundation; either version 3 of the License, or |
9 | | * (at your option) any later version. |
10 | | * |
11 | | * This program is distributed in the hope that it will be useful, |
12 | | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | | * GNU General Public License for more details. |
15 | | * |
16 | | * You should have received a copy of the GNU General Public License |
17 | | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
18 | | */ |
19 | | |
20 | | /** |
21 | | * @brief Notify smbd about idmap changes |
22 | | * @file msg_idmap.c |
23 | | * @author Gregor Beck <gb@sernet.de> |
24 | | * @date Feb 2011 |
25 | | * |
26 | | */ |
27 | | |
28 | | #include "includes.h" |
29 | | #include "messages.h" |
30 | | #include "lib/id_cache.h" |
31 | | #include "../lib/util/memcache.h" |
32 | | #include "idmap_cache.h" |
33 | | #include "../librpc/gen_ndr/ndr_security.h" |
34 | | #include "../libcli/security/dom_sid.h" |
35 | | |
36 | | bool id_cache_ref_parse(const char* str, struct id_cache_ref* id) |
37 | 0 | { |
38 | 0 | struct dom_sid sid; |
39 | 0 | unsigned long ul; |
40 | 0 | char c, trash; |
41 | |
|
42 | 0 | if (sscanf(str, "%cID %lu%c", &c, &ul, &trash) == 2) { |
43 | 0 | switch(c) { |
44 | 0 | case 'G': |
45 | 0 | id->id.gid = ul; |
46 | 0 | id->type = GID; |
47 | 0 | return true; |
48 | 0 | case 'U': |
49 | 0 | id->id.uid = ul; |
50 | 0 | id->type = UID; |
51 | 0 | return true; |
52 | 0 | default: |
53 | 0 | break; |
54 | 0 | } |
55 | 0 | } else if (string_to_sid(&sid, str)) { |
56 | 0 | id->id.sid = sid; |
57 | 0 | id->type = SID; |
58 | 0 | return true; |
59 | 0 | } else if (strncmp(str, "USER ", 5) == 0) { |
60 | 0 | id->id.name = str + 5; |
61 | 0 | id->type = USERNAME; |
62 | 0 | return true; |
63 | 0 | } |
64 | 0 | return false; |
65 | 0 | } |
66 | | |
67 | | static bool delete_getpwnam_cache(const char *username) |
68 | 0 | { |
69 | 0 | DATA_BLOB name = data_blob_string_const_null(username); |
70 | 0 | DEBUG(6, ("Delete passwd struct for %s from memcache\n", |
71 | 0 | username)); |
72 | 0 | memcache_delete(NULL, GETPWNAM_CACHE, name); |
73 | 0 | return true; |
74 | 0 | } |
75 | | |
76 | | void id_cache_delete_from_cache(const struct id_cache_ref* id) |
77 | 0 | { |
78 | 0 | switch(id->type) { |
79 | 0 | case UID: |
80 | 0 | idmap_cache_del_uid(id->id.uid); |
81 | 0 | break; |
82 | 0 | case GID: |
83 | 0 | idmap_cache_del_gid(id->id.gid); |
84 | 0 | break; |
85 | 0 | case SID: |
86 | 0 | idmap_cache_del_sid(&id->id.sid); |
87 | 0 | break; |
88 | 0 | case USERNAME: |
89 | 0 | delete_getpwnam_cache(id->id.name); |
90 | 0 | break; |
91 | 0 | default: |
92 | 0 | break; |
93 | 0 | } |
94 | 0 | } |
95 | | |
96 | | void id_cache_delete_message(struct messaging_context *msg_ctx, |
97 | | void *private_data, |
98 | | uint32_t msg_type, |
99 | | struct server_id server_id, |
100 | | DATA_BLOB* data) |
101 | 0 | { |
102 | 0 | const char *msg = (data && data->data) ? (const char *)data->data : "<NULL>"; |
103 | 0 | struct id_cache_ref id; |
104 | |
|
105 | 0 | if (!id_cache_ref_parse(msg, &id)) { |
106 | 0 | DEBUG(0, ("Invalid ?ID: %s\n", msg)); |
107 | 0 | return; |
108 | 0 | } |
109 | | |
110 | 0 | id_cache_delete_from_cache(&id); |
111 | 0 | } |
112 | | |
113 | | void id_cache_register_msgs(struct messaging_context *ctx) |
114 | 0 | { |
115 | | messaging_register(ctx, NULL, ID_CACHE_DELETE, id_cache_delete_message); |
116 | 0 | } |