Line data Source code
1 : /*
2 : Unix SMB/Netbios implementation.
3 : smbd globals
4 : Copyright (C) Stefan Metzmacher 2009
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 : #include "includes.h"
21 : #include "smbd/smbd.h"
22 : #include "smbd/globals.h"
23 : #include "../lib/util/memcache.h"
24 : #include "messages.h"
25 : #include <tdb.h>
26 :
27 : #ifdef USE_DMAPI
28 : struct smbd_dmapi_context *dmapi_ctx = NULL;
29 : #endif
30 :
31 : const struct mangle_fns *mangle_fns = NULL;
32 :
33 : unsigned char *chartest = NULL;
34 : TDB_CONTEXT *tdb_mangled_cache = NULL;
35 :
36 : /*
37 : this determines how many characters are used from the original filename
38 : in the 8.3 mangled name. A larger value leads to a weaker hash and more collisions.
39 : The largest possible value is 6.
40 : */
41 : unsigned mangle_prefix = 0;
42 :
43 : bool logged_ioctl_message = false;
44 :
45 : time_t last_smb_conf_reload_time = 0;
46 : pid_t background_lpq_updater_pid = -1;
47 :
48 : /****************************************************************************
49 : structure to hold a linked list of queued messages.
50 : for processing.
51 : ****************************************************************************/
52 : uint32_t common_flags2 = FLAGS2_LONG_PATH_COMPONENTS|FLAGS2_32_BIT_ERROR_CODES|FLAGS2_EXTENDED_ATTRIBUTES;
53 :
54 : struct smb_trans_enc_state *partial_srv_trans_enc_ctx = NULL;
55 : struct smb_trans_enc_state *srv_trans_enc_ctx = NULL;
56 :
57 : /* A stack of security contexts. We include the current context as being
58 : the first one, so there is room for another MAX_SEC_CTX_DEPTH more. */
59 : struct sec_ctx sec_ctx_stack[MAX_SEC_CTX_DEPTH + 1];
60 : int sec_ctx_stack_ndx = 0;
61 : bool become_uid_done = false;
62 : bool become_gid_done = false;
63 :
64 : connection_struct *last_conn = NULL;
65 : uint16_t last_flags = 0;
66 :
67 : uint32_t global_client_caps = 0;
68 :
69 : uint16_t fnf_handle = 257;
70 :
71 : /* A stack of current_user connection contexts. */
72 : struct conn_ctx conn_ctx_stack[MAX_SEC_CTX_DEPTH];
73 : int conn_ctx_stack_ndx = 0;
74 :
75 : struct vfs_init_function_entry *backends = NULL;
76 : char *sparse_buf = NULL;
77 : char *LastDir = NULL;
78 :
79 : struct smbd_parent_context *am_parent = NULL;
80 : struct memcache *smbd_memcache_ctx = NULL;
81 : bool exit_firsttime = true;
82 :
83 : struct smbXsrv_client *global_smbXsrv_client = NULL;
84 :
85 88178 : struct memcache *smbd_memcache(void)
86 : {
87 88178 : if (!smbd_memcache_ctx) {
88 : /*
89 : * Note we MUST use the NULL context here, not the
90 : * autofree context, to avoid side effects in forked
91 : * children exiting.
92 : */
93 120 : smbd_memcache_ctx = memcache_init(NULL,
94 120 : lp_max_stat_cache_size()*1024);
95 : }
96 88178 : if (!smbd_memcache_ctx) {
97 0 : smb_panic("Could not init smbd memcache");
98 : }
99 :
100 88178 : return smbd_memcache_ctx;
101 : }
102 :
103 83 : void smbd_init_globals(void)
104 : {
105 83 : ZERO_STRUCT(conn_ctx_stack);
106 :
107 83 : ZERO_STRUCT(sec_ctx_stack);
108 83 : }
109 :
110 17242 : struct GUID smbd_request_guid(struct smb_request *smb1req, uint16_t idx)
111 : {
112 31906 : struct GUID v = {
113 17242 : .time_low = (uint32_t)smb1req->mid,
114 : .time_hi_and_version = idx,
115 : };
116 :
117 17242 : if (smb1req->smb2req != NULL) {
118 17242 : v.time_mid = (uint16_t)smb1req->smb2req->current_idx;
119 : } else {
120 0 : v.time_mid = (uint16_t)(uintptr_t)smb1req->vwv;
121 : }
122 :
123 17242 : SBVAL((uint8_t *)&v, 8, smb1req->xconn->channel_id);
124 :
125 17242 : return v;
126 : }
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