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1.1 misho 1: /* 2: * Copyright (c) 2014 Vyronas Tsingaras (vtsingaras@it.auth.gr) 3: * Copyright (C) 2014 Martin Willi 4: * Copyright (C) 2014 revosec AG 5: * 6: * Permission is hereby granted, free of charge, to any person obtaining a copy 7: * of this software and associated documentation files (the "Software"), to deal 8: * in the Software without restriction, including without limitation the rights 9: * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10: * copies of the Software, and to permit persons to whom the Software is 11: * furnished to do so, subject to the following conditions: 12: * 13: * The above copyright notice and this permission notice shall be included in 14: * all copies or substantial portions of the Software. 15: * 16: * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17: * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18: * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19: * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20: * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21: * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 22: * THE SOFTWARE. 23: */ 24: 25: #include "ext_auth_plugin.h" 26: #include "ext_auth_listener.h" 27: 28: #include <daemon.h> 29: 30: typedef struct private_ext_auth_plugin_t private_ext_auth_plugin_t; 31: 32: /** 33: * private data of ext_auth plugin 34: */ 35: struct private_ext_auth_plugin_t { 36: 37: /** 38: * implements plugin interface 39: */ 40: ext_auth_plugin_t public; 41: 42: /** 43: * Listener verifying peers during authorization 44: */ 45: ext_auth_listener_t *listener; 46: }; 47: 48: METHOD(plugin_t, get_name, char*, 49: private_ext_auth_plugin_t *this) 50: { 51: return "ext-auth"; 52: } 53: 54: /** 55: * Create a listener instance, NULL on error 56: */ 57: static ext_auth_listener_t* create_listener() 58: { 59: char *script; 60: 61: script = lib->settings->get_str(lib->settings, 62: "%s.plugins.ext-auth.script", NULL, lib->ns); 63: if (!script) 64: { 65: DBG1(DBG_CFG, "no script for ext-auth script defined, disabled"); 66: return NULL; 67: } 68: DBG1(DBG_CFG, "using ext-auth script '%s'", script); 69: return ext_auth_listener_create(script); 70: } 71: 72: /** 73: * Register listener 74: */ 75: static bool plugin_cb(private_ext_auth_plugin_t *this, 76: plugin_feature_t *feature, bool reg, void *cb_data) 77: { 78: if (reg) 79: { 80: this->listener = create_listener(); 81: if (!this->listener) 82: { 83: return FALSE; 84: } 85: charon->bus->add_listener(charon->bus, &this->listener->listener); 86: } 87: else 88: { 89: if (this->listener) 90: { 91: charon->bus->remove_listener(charon->bus, &this->listener->listener); 92: this->listener->destroy(this->listener); 93: } 94: } 95: return TRUE; 96: } 97: 98: METHOD(plugin_t, get_features, int, 99: private_ext_auth_plugin_t *this, plugin_feature_t *features[]) 100: { 101: static plugin_feature_t f[] = { 102: PLUGIN_CALLBACK((plugin_feature_callback_t)plugin_cb, NULL), 103: PLUGIN_PROVIDE(CUSTOM, "ext_auth"), 104: }; 105: *features = f; 106: return countof(f); 107: } 108: 109: 110: METHOD(plugin_t, reload, bool, 111: private_ext_auth_plugin_t *this) 112: { 113: ext_auth_listener_t *listener; 114: 115: /* reload new listener overlapped */ 116: listener = create_listener(); 117: if (listener) 118: { 119: charon->bus->add_listener(charon->bus, &listener->listener); 120: } 121: if (this->listener) 122: { 123: charon->bus->remove_listener(charon->bus, &this->listener->listener); 124: this->listener->destroy(this->listener); 125: } 126: this->listener = listener; 127: 128: return TRUE; 129: } 130: 131: METHOD(plugin_t, destroy, void, 132: private_ext_auth_plugin_t *this) 133: { 134: free(this); 135: } 136: 137: /** 138: * Plugin constructor 139: */ 140: plugin_t *ext_auth_plugin_create() 141: { 142: private_ext_auth_plugin_t *this; 143: 144: INIT(this, 145: .public = { 146: .plugin = { 147: .get_name = _get_name, 148: .get_features = _get_features, 149: .reload = _reload, 150: .destroy = _destroy, 151: }, 152: }, 153: ); 154: 155: return &this->public.plugin; 156: }