1 /*
2 BAREOS® - Backup Archiving REcovery Open Sourced
3
4 Copyright (C) 2003-2009 Free Software Foundation Europe e.V.
5 Copyright (C) 2016-2018 Bareos GmbH & Co. KG
6
7 This program is Free Software; you can redistribute it and/or
8 modify it under the terms of version three of the GNU Affero General Public
9 License as published by the Free Software Foundation and included
10 in the file LICENSE.
11
12 This program is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Affero General Public License for more details.
16
17 You should have received a copy of the GNU Affero General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
20 02110-1301, USA.
21 */
22 /*
23 * Kern Sibbald, May MMIII
24 */
25 /**
26 * @file
27 * Enable backup privileges for Win32 systems.
28 */
29
30 #include "include/bareos.h"
31 #include "find.h"
32 #include "include/jcr.h"
33 #include "findlib/enable_priv.h"
34
35 /*=============================================================*/
36 /* */
37 /* * * * U n i x * * * * */
38 /* */
39 /*=============================================================*/
40
41 #if !defined(HAVE_WIN32)
EnableBackupPrivileges(JobControlRecord * jcr,int ignore_errors)42 int EnableBackupPrivileges(JobControlRecord* jcr, int ignore_errors)
43 {
44 return 0;
45 }
46 #endif
47
48 /*=============================================================*/
49 /* */
50 /* * * * W i n 3 2 * * * * */
51 /* */
52 /*=============================================================*/
53
54 #if defined(HAVE_WIN32)
55 void WinError(JobControlRecord* jcr, const char* prefix, DWORD lerror);
56
enable_priv(JobControlRecord * jcr,HANDLE hToken,const char * name,int ignore_errors)57 static int enable_priv(JobControlRecord* jcr,
58 HANDLE hToken,
59 const char* name,
60 int ignore_errors)
61 {
62 TOKEN_PRIVILEGES tkp;
63 DWORD lerror;
64
65 if (!(p_LookupPrivilegeValue && p_AdjustTokenPrivileges)) {
66 return 0; /* not avail on this OS */
67 }
68
69 // Get the LUID for the security privilege.
70 if (!p_LookupPrivilegeValue(NULL, name, &tkp.Privileges[0].Luid)) {
71 WinError(jcr, "LookupPrivilegeValue", GetLastError());
72 return 0;
73 }
74
75 /* Set the security privilege for this process. */
76 tkp.PrivilegeCount = 1;
77 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
78 p_AdjustTokenPrivileges(hToken, FALSE, &tkp, sizeof(TOKEN_PRIVILEGES), NULL,
79 NULL);
80 lerror = GetLastError();
81 if (lerror != ERROR_SUCCESS) {
82 if (!ignore_errors) {
83 char buf[200];
84 strcpy(buf, _("AdjustTokenPrivileges set "));
85 bstrncat(buf, name, sizeof(buf));
86 WinError(jcr, buf, lerror);
87 }
88 return 0;
89 }
90 return 1;
91 }
92
93 /**
94 * Setup privileges we think we will need. We probably do not need
95 * the SE_SECURITY_NAME, but since nothing seems to be working,
96 * we get it hoping to fix the problems.
97 */
EnableBackupPrivileges(JobControlRecord * jcr,int ignore_errors)98 int EnableBackupPrivileges(JobControlRecord* jcr, int ignore_errors)
99 {
100 HANDLE hToken, hProcess;
101 int status = 0;
102
103 if (!p_OpenProcessToken) { return 0; /* No avail on this OS */ }
104
105 hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, GetCurrentProcessId());
106
107 // Get a token for this process.
108 if (!p_OpenProcessToken(hProcess, TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,
109 &hToken)) {
110 if (!ignore_errors) { WinError(jcr, "OpenProcessToken", GetLastError()); }
111 /* Forge on anyway */
112 }
113
114 /* Return a bit map of permissions set. */
115 if (enable_priv(jcr, hToken, SE_BACKUP_NAME, ignore_errors)) {
116 status |= 1 << 1;
117 }
118 if (enable_priv(jcr, hToken, SE_RESTORE_NAME, ignore_errors)) {
119 status |= 1 << 2;
120 }
121 if (enable_priv(jcr, hToken, SE_SECURITY_NAME, ignore_errors)) {
122 status |= 1 << 0;
123 }
124 if (enable_priv(jcr, hToken, SE_TAKE_OWNERSHIP_NAME, ignore_errors)) {
125 status |= 1 << 3;
126 }
127 if (enable_priv(jcr, hToken, SE_ASSIGNPRIMARYTOKEN_NAME, ignore_errors)) {
128 status |= 1 << 4;
129 }
130 if (enable_priv(jcr, hToken, SE_SYSTEM_ENVIRONMENT_NAME, ignore_errors)) {
131 status |= 1 << 5;
132 }
133 if (enable_priv(jcr, hToken, SE_CREATE_TOKEN_NAME, ignore_errors)) {
134 status |= 1 << 6;
135 }
136 if (enable_priv(jcr, hToken, SE_MACHINE_ACCOUNT_NAME, ignore_errors)) {
137 status |= 1 << 7;
138 }
139 if (enable_priv(jcr, hToken, SE_TCB_NAME, ignore_errors)) {
140 status |= 1 << 8;
141 }
142 if (enable_priv(jcr, hToken, SE_CREATE_PERMANENT_NAME, ignore_errors)) {
143 status |= 1 << 10;
144 }
145
146 if (status) { status |= 1 << 9; }
147
148 CloseHandle(hToken);
149 CloseHandle(hProcess);
150 return status;
151 }
152
153 #endif /* HAVE_WIN32 */
154