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1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | /* | |
4 | * Ceph - scalable distributed file system | |
5 | * | |
6 | * Copyright (C) 2004-2009 Sage Weil <sage@newdream.net> | |
7 | * | |
8 | * This is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License version 2.1, as published by the Free Software | |
11 | * Foundation. See file COPYING. | |
12 | * | |
13 | */ | |
14 | ||
15 | #include <algorithm> | |
16 | #include "common/debug.h" | |
17 | #include "include/str_list.h" | |
18 | ||
19 | #include "AuthMethodList.h" | |
20 | ||
21 | const static int dout_subsys = ceph_subsys_auth; | |
22 | ||
23 | ||
24 | AuthMethodList::AuthMethodList(CephContext *cct, string str) | |
25 | { | |
26 | list<string> sup_list; | |
27 | get_str_list(str, sup_list); | |
28 | if (sup_list.empty()) { | |
29 | lderr(cct) << "WARNING: empty auth protocol list" << dendl; | |
30 | } | |
31 | for (list<string>::iterator iter = sup_list.begin(); iter != sup_list.end(); ++iter) { | |
32 | ldout(cct, 5) << "adding auth protocol: " << *iter << dendl; | |
33 | if (iter->compare("cephx") == 0) { | |
34 | auth_supported.push_back(CEPH_AUTH_CEPHX); | |
35 | } else if (iter->compare("none") == 0) { | |
36 | auth_supported.push_back(CEPH_AUTH_NONE); | |
37 | } else { | |
38 | auth_supported.push_back(CEPH_AUTH_UNKNOWN); | |
39 | lderr(cct) << "WARNING: unknown auth protocol defined: " << *iter << dendl; | |
40 | } | |
41 | } | |
42 | if (auth_supported.empty()) { | |
43 | lderr(cct) << "WARNING: no auth protocol defined, use 'cephx' by default" << dendl; | |
44 | auth_supported.push_back(CEPH_AUTH_CEPHX); | |
45 | } | |
46 | } | |
47 | ||
48 | bool AuthMethodList::is_supported_auth(int auth_type) | |
49 | { | |
50 | return std::find(auth_supported.begin(), auth_supported.end(), auth_type) != auth_supported.end(); | |
51 | } | |
52 | ||
53 | int AuthMethodList::pick(const std::set<__u32>& supported) | |
54 | { | |
55 | for (set<__u32>::const_reverse_iterator p = supported.rbegin(); p != supported.rend(); ++p) | |
56 | if (is_supported_auth(*p)) | |
57 | return *p; | |
58 | return CEPH_AUTH_UNKNOWN; | |
59 | } | |
60 | ||
61 | void AuthMethodList::remove_supported_auth(int auth_type) | |
62 | { | |
63 | for (list<__u32>::iterator p = auth_supported.begin(); p != auth_supported.end(); ) { | |
64 | if (*p == (__u32)auth_type) | |
65 | auth_supported.erase(p++); | |
66 | else | |
67 | ++p; | |
68 | } | |
69 | } |