492 lines
12 KiB
C
492 lines
12 KiB
C
/*
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*
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* Wireless daemon for Linux
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*
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* Copyright (C) 2013-2014 Intel Corporation. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <getopt.h>
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#include <ell/ell.h>
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#include "ell/key-private.h"
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#include "linux/nl80211.h"
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#include "src/iwd.h"
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#include "src/netdev.h"
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#include "src/device.h"
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#include "src/wiphy.h"
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#include "src/dbus.h"
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#include "src/eap.h"
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#include "src/eapol.h"
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#include "src/scan.h"
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#include "src/wsc.h"
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#include "src/knownnetworks.h"
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#include "src/rfkill.h"
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#include "src/ap.h"
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#include "src/plugin.h"
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#include "src/simauth.h"
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#include "src/adhoc.h"
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#include "src/backtrace.h"
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static struct l_settings *iwd_config;
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static struct l_timeout *timeout;
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static const char *interfaces;
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static const char *nointerfaces;
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static const char *phys;
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static const char *nophys;
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static const char *config_dir;
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static const char *plugins;
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static const char *noplugins;
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static const char *debugopt;
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static bool terminating;
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static void main_loop_quit(struct l_timeout *timeout, void *user_data)
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{
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l_main_quit();
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}
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void iwd_shutdown(void)
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{
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if (terminating)
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return;
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terminating = true;
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dbus_shutdown();
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netdev_shutdown();
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timeout = l_timeout_create(1, main_loop_quit, NULL, NULL);
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}
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static void signal_handler(struct l_signal *signal, uint32_t signo,
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void *user_data)
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{
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switch (signo) {
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case SIGINT:
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case SIGTERM:
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l_info("Terminate");
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iwd_shutdown();
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break;
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}
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}
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const struct l_settings *iwd_get_config(void)
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{
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return iwd_config;
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}
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static void usage(void)
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{
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printf("iwd - Wireless daemon\n"
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"Usage:\n");
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printf("\tiwd [options]\n");
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printf("Options:\n"
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"\t-B, --dbus-debug Enable D-Bus debugging\n"
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"\t-i, --interfaces Interfaces to manage\n"
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"\t-I, --nointerfaces Interfaces to ignore\n"
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"\t-p, --phys Phys to manage\n"
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"\t-P, --nophys Phys to ignore\n"
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"\t-c, --config Configuration directory to use\n"
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"\t-l, --plugin Plugins to include\n"
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"\t-L, --noplugin Plugins to exclude\n"
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"\t-d, --debug Enable debug output\n"
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"\t-h, --help Show help options\n");
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}
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static const struct option main_options[] = {
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{ "dbus-debug", no_argument, NULL, 'B' },
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{ "version", no_argument, NULL, 'v' },
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{ "interfaces", required_argument, NULL, 'i' },
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{ "nointerfaces", required_argument, NULL, 'I' },
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{ "phys", required_argument, NULL, 'p' },
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{ "nophys", required_argument, NULL, 'P' },
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{ "config", required_argument, NULL, 'c' },
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{ "plugin", required_argument, NULL, 'l' },
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{ "noplugin", required_argument, NULL, 'L' },
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{ "debug", optional_argument, NULL, 'd' },
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{ "help", no_argument, NULL, 'h' },
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{ }
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};
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static void do_debug(const char *str, void *user_data)
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{
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const char *prefix = user_data;
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l_info("%s%s", prefix, str);
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}
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static void nl80211_appeared(void *user_data)
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{
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struct l_genl_family *nl80211 = user_data;
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if (terminating)
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return;
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l_debug("Found nl80211 interface");
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if (!wiphy_init(nl80211, phys, nophys))
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l_error("Unable to init wiphy functionality");
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if (!netdev_init(nl80211, interfaces, nointerfaces))
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l_error("Unable to init netdev functionality");
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if (!scan_init(nl80211))
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l_error("Unable to init scan functionality");
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if (!wsc_init(nl80211))
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l_error("Unable to init WSC functionality");
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ap_init(nl80211);
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}
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static void nl80211_vanished(void *user_data)
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{
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l_debug("Lost nl80211 interface");
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ap_exit();
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wsc_exit();
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scan_exit();
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netdev_exit();
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wiphy_exit();
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}
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static void print_koption(const void *key, void *value, void *user_data)
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{
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l_info("\t%s", (const char *) key);
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}
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static int check_crypto()
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{
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int r = 0;
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struct l_hashmap *options = l_hashmap_string_new();
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struct l_hashmap *optional = l_hashmap_string_new();
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if (!l_checksum_is_supported(L_CHECKSUM_SHA1, true)) {
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r = -ENOTSUP;
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l_error("No HMAC(SHA1) support found");
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l_hashmap_insert(options, "CONFIG_CRYPTO_USER_API_HASH", &r);
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l_hashmap_insert(options, "CONFIG_CRYPTO_SHA1", &r);
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l_hashmap_insert(options, "CONFIG_CRYPTO_HMAC", &r);
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l_hashmap_insert(optional, "CONFIG_CRYPTO_SHA1_SSSE3", &r);
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}
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if (!l_checksum_is_supported(L_CHECKSUM_MD5, true)) {
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r = -ENOTSUP;
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l_error("No HMAC(MD5) support found");
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l_hashmap_insert(options, "CONFIG_CRYPTO_USER_API_HASH", &r);
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l_hashmap_insert(options, "CONFIG_CRYPTO_MD5", &r);
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l_hashmap_insert(options, "CONFIG_CRYPTO_HMAC", &r);
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}
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if (!l_checksum_cmac_aes_supported()) {
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r = -ENOTSUP;
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l_error("No CMAC(AES) support found");
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l_hashmap_insert(options, "CONFIG_CRYPTO_USER_API_HASH", &r);
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l_hashmap_insert(options, "CONFIG_CRYPTO_AES", &r);
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l_hashmap_insert(options, "CONFIG_CRYPTO_CMAC", &r);
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l_hashmap_insert(optional, "CONFIG_CRYPTO_AES_X86_64", &r);
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l_hashmap_insert(optional, "CONFIG_CRYPTO_AES_NI_INTEL", &r);
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}
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if (!l_checksum_is_supported(L_CHECKSUM_SHA256, true)) {
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r = -ENOTSUP;
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l_error("No HMAC(SHA256) support not found");
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l_hashmap_insert(options, "CONFIG_CRYPTO_USER_API_HASH", &r);
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l_hashmap_insert(options, "CONFIG_CRYPTO_HMAC", &r);
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l_hashmap_insert(options, "CONFIG_CRYPTO_SHA256", &r);
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l_hashmap_insert(optional, "CONFIG_CRYPTO_SHA256_SSSE3", &r);
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}
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if (!l_checksum_is_supported(L_CHECKSUM_SHA512, true)) {
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l_warn("No HMAC(SHA512) support found, "
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"certain TLS connections might fail");
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l_hashmap_insert(options, "CONFIG_CRYPTO_SHA512", &r);
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l_hashmap_insert(optional, "CONFIG_CRYPTO_SHA512_SSSE3", &r);
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}
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if (!l_cipher_is_supported(L_CIPHER_ARC4)) {
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r = -ENOTSUP;
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l_error("RC4 support not found");
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l_hashmap_insert(options,
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"CONFIG_CRYPTO_USER_API_SKCIPHER", &r);
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l_hashmap_insert(options, "CONFIG_CRYPTO_ARC4", &r);
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l_hashmap_insert(options, "CONFIG_CRYPTO_ECB", &r);
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}
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if (!l_cipher_is_supported(L_CIPHER_DES) ||
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!l_cipher_is_supported(L_CIPHER_DES3_EDE_CBC)) {
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r = -ENOTSUP;
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l_error("DES support not found");
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l_hashmap_insert(options,
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"CONFIG_CRYPTO_USER_API_SKCIPHER", &r);
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l_hashmap_insert(options, "CONFIG_CRYPTO_DES", &r);
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l_hashmap_insert(options, "CONFIG_CRYPTO_ECB", &r);
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l_hashmap_insert(optional, "CONFIG_CRYPTO_DES3_EDE_X86_64", &r);
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}
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if (!l_cipher_is_supported(L_CIPHER_AES)) {
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r = -ENOTSUP;
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l_error("AES support not found");
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l_hashmap_insert(options,
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"CONFIG_CRYPTO_USER_API_SKCIPHER", &r);
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l_hashmap_insert(options, "CONFIG_CRYPTO_AES", &r);
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l_hashmap_insert(options, "CONFIG_CRYPTO_ECB", &r);
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l_hashmap_insert(optional, "CONFIG_CRYPTO_AES_X86_64", &r);
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l_hashmap_insert(optional, "CONFIG_CRYPTO_AES_NI_INTEL", &r);
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}
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if (!l_cipher_is_supported(L_CIPHER_DES3_EDE_CBC)) {
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l_warn("No CBC(DES3_EDE) support found, "
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"certain TLS connections might fail");
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l_hashmap_insert(options, "CONFIG_CRYPTO_DES", &r);
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l_hashmap_insert(options, "CONFIG_CRYPTO_CBC", &r);
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l_hashmap_insert(optional, "CONFIG_CRYPTO_DES3_EDE_X86_64", &r);
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}
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if (!l_cipher_is_supported(L_CIPHER_AES_CBC)) {
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l_warn("No CBC(AES) support found, "
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"WPS will not be available");
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l_hashmap_insert(options, "CONFIG_CRYPTO_CBC", &r);
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}
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if (!l_key_is_supported(L_KEY_FEATURE_DH)) {
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l_warn("No Diffie-Hellman support found, "
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"WPS will not be available");
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l_hashmap_insert(options, "CONFIG_KEY_DH_OPERATIONS", &r);
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}
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if (l_hashmap_isempty(options))
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goto done;
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l_info("The following options are missing in the kernel:");
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if (l_hashmap_remove(options, "CONFIG_CRYPTO_USER_API_HASH"))
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l_info("\tCONFIG_CRYPTO_USER_API_HASH");
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if (l_hashmap_remove(options, "CONFIG_CRYPTO_USER_API_SKCIPHER"))
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l_info("\tCONFIG_CRYPTO_USER_API_SKCIPHER");
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l_hashmap_foreach(options, print_koption, NULL);
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l_info("The following optimized implementations might be available:");
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l_hashmap_foreach(optional, print_koption, NULL);
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done:
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l_hashmap_destroy(options, NULL);
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l_hashmap_destroy(optional, NULL);
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return r;
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}
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int main(int argc, char *argv[])
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{
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bool enable_dbus_debug = false;
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struct l_signal *signal;
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sigset_t mask;
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int exit_status;
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struct l_genl *genl;
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struct l_genl_family *nl80211;
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char *config_path;
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uint32_t eap_mtu;
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for (;;) {
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int opt;
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opt = getopt_long(argc, argv, "Bi:I:p:P:c:vd::h",
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main_options, NULL);
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if (opt < 0)
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break;
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switch (opt) {
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case 'B':
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enable_dbus_debug = true;
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break;
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case 'i':
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interfaces = optarg;
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break;
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case 'I':
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nointerfaces = optarg;
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break;
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case 'p':
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phys = optarg;
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break;
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case 'P':
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nophys = optarg;
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break;
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case 'v':
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printf("%s\n", VERSION);
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return EXIT_SUCCESS;
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case 'c':
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config_dir = optarg;
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break;
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case 'l':
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plugins = optarg;
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break;
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case 'L':
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noplugins = optarg;
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break;
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case 'd':
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if (optarg)
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debugopt = optarg;
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else if (argv[optind] && argv[optind][0] != '-')
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debugopt = argv[optind++];
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else
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debugopt = "*";
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break;
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case 'h':
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usage();
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return EXIT_SUCCESS;
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default:
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return EXIT_FAILURE;
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}
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}
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if (argc - optind > 0) {
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fprintf(stderr, "Invalid command line parameters\n");
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return EXIT_FAILURE;
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}
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l_log_set_stderr();
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if (check_crypto() < 0)
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return EXIT_FAILURE;
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if (!l_main_init())
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return EXIT_FAILURE;
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sigemptyset(&mask);
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sigaddset(&mask, SIGINT);
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sigaddset(&mask, SIGTERM);
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signal = l_signal_create(&mask, signal_handler, NULL, NULL);
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if (debugopt)
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l_debug_enable(debugopt);
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#ifdef __GLIBC__
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__iwd_backtrace_init();
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#endif
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l_info("Wireless daemon version %s", VERSION);
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if (!config_dir)
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config_dir = CONFIGDIR;
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config_path = l_strdup_printf("/%s/%s", config_dir, "main.conf");
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iwd_config = l_settings_new();
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if (!l_settings_load_from_file(iwd_config, config_path))
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l_warn("Skipping optional configuration file %s", config_path);
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l_free(config_path);
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if (!dbus_init(enable_dbus_debug)) {
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exit_status = EXIT_FAILURE;
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goto done;
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}
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if (!sim_auth_init()) {
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l_error("Failed to start sim auth module");
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exit_status = EXIT_FAILURE;
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goto done;
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}
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plugin_init(plugins, noplugins);
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genl = l_genl_new_default();
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if (!genl) {
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l_error("Failed to open generic netlink socket");
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exit_status = EXIT_FAILURE;
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goto fail_genl;
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}
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if (getenv("IWD_GENL_DEBUG"))
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l_genl_set_debug(genl, do_debug, "[GENL] ", NULL);
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if (!device_init()) {
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exit_status = EXIT_FAILURE;
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goto fail_device;
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}
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l_debug("Opening nl80211 interface");
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nl80211 = l_genl_family_new(genl, NL80211_GENL_NAME);
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if (!nl80211) {
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l_error("Failed to open nl80211 interface");
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exit_status = EXIT_FAILURE;
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goto fail_nl80211;
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}
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l_genl_family_set_watches(nl80211, nl80211_appeared, nl80211_vanished,
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nl80211, NULL);
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if (!l_settings_get_uint(iwd_config, "EAP", "mtu", &eap_mtu))
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eap_mtu = 1400; /* on WiFi the real MTU is around 2304 */
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__eapol_set_config(iwd_config);
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adhoc_init();
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eap_init(eap_mtu);
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eapol_init();
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network_init();
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known_networks_init();
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rfkill_init();
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exit_status = EXIT_SUCCESS;
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l_main_run();
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rfkill_exit();
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known_networks_exit();
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network_exit();
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adhoc_exit();
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eapol_exit();
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eap_exit();
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plugin_exit();
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sim_auth_exit();
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l_genl_family_unref(nl80211);
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fail_nl80211:
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device_exit();
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fail_device:
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l_genl_unref(genl);
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fail_genl:
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dbus_exit();
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done:
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l_settings_free(iwd_config);
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l_signal_remove(signal);
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l_timeout_remove(timeout);
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l_main_exit();
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return exit_status;
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}
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