Annotation of embedaddon/strongswan/src/libstrongswan/plugins/af_alg/af_alg_plugin.c, revision 1.1.1.1
1.1 misho 1: /*
2: * Copyright (C) 2010 Martin Willi
3: * Copyright (C) 2010 revosec AG
4: *
5: * This program is free software; you can redistribute it and/or modify it
6: * under the terms of the GNU General Public License as published by the
7: * Free Software Foundation; either version 2 of the License, or (at your
8: * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
9: *
10: * This program is distributed in the hope that it will be useful, but
11: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13: * for more details.
14: */
15:
16: #include "af_alg_plugin.h"
17:
18: #include <library.h>
19:
20: #include "af_alg_hasher.h"
21: #include "af_alg_signer.h"
22: #include "af_alg_prf.h"
23: #include "af_alg_crypter.h"
24:
25: #include <unistd.h>
26:
27: typedef struct private_af_alg_plugin_t private_af_alg_plugin_t;
28:
29: /**
30: * private data of af_alg_plugin
31: */
32: struct private_af_alg_plugin_t {
33:
34: /**
35: * public functions
36: */
37: af_alg_plugin_t public;
38: };
39:
40: METHOD(plugin_t, get_name, char*,
41: private_af_alg_plugin_t *this)
42: {
43: return "af-alg";
44: }
45:
46: static bool af_alg_supported()
47: {
48: int fd;
49:
50: fd = socket(AF_ALG, SOCK_SEQPACKET, 0);
51: if (fd != -1)
52: {
53: close(fd);
54: return true;
55: }
56: return false;
57: }
58:
59: METHOD(plugin_t, get_features, int,
60: private_af_alg_plugin_t *this, plugin_feature_t *features[])
61: {
62: static plugin_feature_t f[AF_ALG_HASHER + AF_ALG_SIGNER +
63: AF_ALG_PRF + AF_ALG_CRYPTER + 4] = {};
64: static int count = 0;
65:
66: if (!count)
67: { /* initialize only once */
68: if (!af_alg_supported())
69: {
70: return 0;
71: }
72: f[count++] = PLUGIN_REGISTER(HASHER, af_alg_hasher_create);
73: af_alg_hasher_probe(f, &count);
74: f[count++] = PLUGIN_REGISTER(SIGNER, af_alg_signer_create);
75: af_alg_signer_probe(f, &count);
76: f[count++] = PLUGIN_REGISTER(PRF, af_alg_prf_create);
77: af_alg_prf_probe(f, &count);
78: f[count++] = PLUGIN_REGISTER(CRYPTER, af_alg_crypter_create);
79: af_alg_crypter_probe(f, &count);
80: }
81: *features = f;
82: return count;
83: }
84:
85: METHOD(plugin_t, destroy, void,
86: private_af_alg_plugin_t *this)
87: {
88: free(this);
89: }
90:
91: /*
92: * see header file
93: */
94: plugin_t *af_alg_plugin_create()
95: {
96: private_af_alg_plugin_t *this;
97:
98: INIT(this,
99: .public = {
100: .plugin = {
101: .get_name = _get_name,
102: .get_features = _get_features,
103: .destroy = _destroy,
104: },
105: },
106: );
107:
108: return &this->public.plugin;
109: }
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