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1 /*
2 * Copyright (c) 2000-2001,2003-2004,2011,2014 Apple Inc. All Rights Reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23
24
25 //
26 // cssm module loader interface - MACOS X (CFBundle/DYLD) version.
27 //
28 // This file provides a C++-style interface to CFBundles as managed by the CF-style
29 // system interfaces. The implementation looks a bit, well, hybrid - but the visible
30 // interfaces are pure C++.
31 //
32 #include "modloader.h"
33 #include "modload_plugin.h"
34 # include "modload_static.h"
35
36
37 namespace Security {
38
39
40 //
41 // Pull in functions for built-in plugin modules
42 //
43 #define BUILTIN(suffix) \
44 extern "C" CSSM_SPI_ModuleLoadFunction CSSM_SPI_ModuleLoad ## suffix; \
45 extern "C" CSSM_SPI_ModuleUnloadFunction CSSM_SPI_ModuleUnload ## suffix; \
46 extern "C" CSSM_SPI_ModuleAttachFunction CSSM_SPI_ModuleAttach ## suffix; \
47 extern "C" CSSM_SPI_ModuleDetachFunction CSSM_SPI_ModuleDetach ## suffix; \
48 static const PluginFunctions builtin ## suffix = { \
49 CSSM_SPI_ModuleLoad ## suffix, CSSM_SPI_ModuleUnload ## suffix, \
50 CSSM_SPI_ModuleAttach ## suffix, CSSM_SPI_ModuleDetach ## suffix \
51 };
52
53 BUILTIN(__apple_csp)
54 BUILTIN(__apple_file_dl)
55 BUILTIN(__apple_cspdl)
56 BUILTIN(__apple_x509_cl)
57 BUILTIN(__apple_x509_tp)
58 BUILTIN(__sd_cspdl)
59
60
61 //
62 // Construct the canonical ModuleLoader object
63 //
64 ModuleLoader::ModuleLoader()
65 {
66 #if !defined(NO_BUILTIN_PLUGINS)
67 mPlugins["*AppleCSP"] = new StaticPlugin(builtin__apple_csp);
68 mPlugins["*AppleDL"] = new StaticPlugin(builtin__apple_file_dl);
69 mPlugins["*AppleCSPDL"] = new StaticPlugin(builtin__apple_cspdl);
70 mPlugins["*AppleX509CL"] = new StaticPlugin(builtin__apple_x509_cl);
71 mPlugins["*AppleX509TP"] = new StaticPlugin(builtin__apple_x509_tp);
72 mPlugins["*SDCSPDL"] = new StaticPlugin(builtin__sd_cspdl);
73 #endif //NO_BUILTIN_PLUGINS
74 }
75
76
77 //
78 // "Load" a plugin, given its MDS path. At this layer, we are performing
79 // a purely physical load operation. No code in the plugin is called.
80 // If "built-in plugins" are enabled, the moduleTable will come pre-initialized
81 // with certain paths. Since we consult this table before going to disk, this
82 // means that we'll pick these up first *as long as the paths match exactly*.
83 // There is nothing magical in the path strings themselves, other than by
84 // convention. (The convention is "*NAME", which conveniently does not match
85 // any actual file path.)
86 //
87 Plugin *ModuleLoader::operator () (const string &path)
88 {
89 Plugin * &plugin = mPlugins[path];
90 if (!plugin) {
91 secdebug("cssm", "ModuleLoader(): creating plugin %s", path.c_str());
92 plugin = new LoadablePlugin(path.c_str());
93 }
94 else {
95 secdebug("cssm", "ModuleLoader(): FOUND plugin %s, isLoaded %s",
96 path.c_str(), plugin->isLoaded() ? "TRUE" : "FALSE");
97 if(!plugin->isLoaded()) {
98 plugin->load();
99 }
100 }
101 return plugin;
102 }
103
104
105 } // end namespace Security