diff options
Diffstat (limited to 'src/charon-nm/nm/nm_backend.c')
| -rw-r--r-- | src/charon-nm/nm/nm_backend.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/src/charon-nm/nm/nm_backend.c b/src/charon-nm/nm/nm_backend.c new file mode 100644 index 000000000..f36cf1f68 --- /dev/null +++ b/src/charon-nm/nm/nm_backend.c @@ -0,0 +1,176 @@ +/* + * Copyright (C) 2012 Tobias Brunner + * Copyright (C) 2008-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "nm_service.h" +#include "nm_creds.h" +#include "nm_handler.h" + +#include <hydra.h> +#include <daemon.h> +#include <processing/jobs/callback_job.h> + +#ifndef CAP_DAC_OVERRIDE +#define CAP_DAC_OVERRIDE 1 +#endif + +typedef struct nm_backend_t nm_backend_t; + +/** + * Data for the NetworkManager backend. + */ +struct nm_backend_t { + + /** + * NetworkManager service (VPNPlugin) + */ + NMStrongswanPlugin *plugin; + + /** + * Glib main loop for a thread, handles DBUS calls + */ + GMainLoop *loop; + + /** + * credential set registered at the daemon + */ + nm_creds_t *creds; + + /** + * attribute handler regeisterd at the daemon + */ + nm_handler_t *handler; +}; + +/** + * Global (but private) instance of the NM backend. + */ +static nm_backend_t *nm_backend = NULL; + +/** + * NM plugin processing routine, creates and handles NMVPNPlugin + */ +static job_requeue_t run(nm_backend_t *this) +{ + this->loop = g_main_loop_new(NULL, FALSE); + g_main_loop_run(this->loop); + return JOB_REQUEUE_NONE; +} + +/** + * Cancel the GLib Main Event Loop + */ +static bool cancel(nm_backend_t *this) +{ + if (this->loop) + { + if (g_main_loop_is_running(this->loop)) + { + g_main_loop_quit(this->loop); + } + g_main_loop_unref(this->loop); + } + return TRUE; +} + +/** + * Deinitialize NetworkManager backend + */ +static void nm_backend_deinit() +{ + nm_backend_t *this = nm_backend; + + if (!this) + { + return; + } + if (this->plugin) + { + g_object_unref(this->plugin); + } + lib->credmgr->remove_set(lib->credmgr, &this->creds->set); + hydra->attributes->remove_handler(hydra->attributes, &this->handler->handler); + this->creds->destroy(this->creds); + this->handler->destroy(this->handler); + free(this); + + nm_backend = NULL; +} + +/** + * Initialize NetworkManager backend + */ +static bool nm_backend_init() +{ + nm_backend_t *this; + + g_type_init (); + if (!g_thread_supported()) + { + g_thread_init(NULL); + } + + INIT(this, + .creds = nm_creds_create(), + .handler = nm_handler_create(), + ); + this->plugin = nm_strongswan_plugin_new(this->creds, this->handler); + nm_backend = this; + + hydra->attributes->add_handler(hydra->attributes, &this->handler->handler); + lib->credmgr->add_set(lib->credmgr, &this->creds->set); + if (!this->plugin) + { + DBG1(DBG_CFG, "DBUS binding failed"); + nm_backend_deinit(); + return FALSE; + } + + /* bypass file permissions to read from users ssh-agent */ + charon->caps->keep(charon->caps, CAP_DAC_OVERRIDE); + + lib->processor->queue_job(lib->processor, + (job_t*)callback_job_create_with_prio((callback_job_cb_t)run, this, + NULL, (callback_job_cancel_t)cancel, JOB_PRIO_CRITICAL)); + return TRUE; +} + +/** + * Initialize/deinitialize NetworkManager backend + */ +static bool nm_backend_cb(void *plugin, + plugin_feature_t *feature, bool reg, void *data) +{ + if (reg) + { + return nm_backend_init(); + } + nm_backend_deinit(); + return TRUE; +} + +/* + * see header file + */ +void nm_backend_register() +{ + static plugin_feature_t features[] = { + PLUGIN_CALLBACK((plugin_feature_callback_t)nm_backend_cb, NULL), + PLUGIN_PROVIDE(CUSTOM, "NetworkManager backend"), + PLUGIN_DEPENDS(CUSTOM, "libcharon"), + }; + lib->plugins->add_static_features(lib->plugins, "nm-backend", features, + countof(features), TRUE); +} |