diff options
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/libppp-plugin.c | 307 |
1 files changed, 307 insertions, 0 deletions
diff --git a/scripts/libppp-plugin.c b/scripts/libppp-plugin.c new file mode 100644 index 00000000..ba79db07 --- /dev/null +++ b/scripts/libppp-plugin.c @@ -0,0 +1,307 @@ +/* + * + * Connection Manager + * + * Copyright (C) 2011 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <pppd/pppd.h> +#include <pppd/fsm.h> +#include <pppd/ipcp.h> +#include <netinet/in.h> +#include <arpa/inet.h> + +#include <dbus/dbus.h> + +#define INET_ADDRES_LEN (INET_ADDRSTRLEN + 5) +#define INET_DNS_LEN (2*INET_ADDRSTRLEN + 9) + +static char *busname; +static char *interface; +static char *path; + +static DBusConnection *connection; + +char pppd_version[] = VERSION; + +int plugin_init(void); + +static void append(DBusMessageIter *dict, const char *key, const char *value) +{ + DBusMessageIter entry; + + /* We clean the environment before invoking pppd, but + * might as well still filter out the few things that get + * added that we're not interested in + */ + if (!strcmp(key, "PWD") || !strcmp(key, "_") || + !strcmp(key, "SHLVL") || + !strcmp(key, "connman_busname") || + !strcmp(key, "connman_network")) + return; + + dbus_message_iter_open_container(dict, DBUS_TYPE_DICT_ENTRY, + NULL, &entry); + + dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &key); + + dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &value); + + dbus_message_iter_close_container(dict, &entry); +} + + +static int ppp_have_secret() +{ + return 1; +} + +static int ppp_get_secret(char *username, char *password) +{ + DBusMessage *msg, *reply; + const char *user, *pass; + DBusError err; + + if (username == NULL && password == NULL) + return -1; + + if (password == NULL) + return 1; + + if (connection == NULL) + return -1; + + dbus_error_init(&err); + + msg = dbus_message_new_method_call(busname, path, interface, "getsec"); + if (msg == NULL) + return -1; + + dbus_message_append_args(msg, DBUS_TYPE_INVALID, DBUS_TYPE_INVALID); + + reply = dbus_connection_send_with_reply_and_block(connection, + msg, -1, &err); + if (reply == NULL) { + if (dbus_error_is_set(&err) == TRUE) + dbus_error_free(&err); + + dbus_message_unref(msg); + return -1; + } + + dbus_message_unref(msg); + + dbus_error_init(&err); + + if (dbus_message_get_args(reply, &err, DBUS_TYPE_STRING, &user, + DBUS_TYPE_STRING, &pass, + DBUS_TYPE_INVALID) == FALSE) { + if (dbus_error_is_set(&err) == TRUE) + dbus_error_free(&err); + + dbus_message_unref(reply); + return -1; + } + + if (username != NULL) + strcpy(username, user); + + strcpy(password, pass); + + dbus_message_unref(reply); + + return 1; +} + +static void ppp_up(void *data, int arg) +{ + char buf[INET_ADDRES_LEN]; + char dns[INET_DNS_LEN]; + const char *reason = "connect"; + bool add_blank = FALSE; + DBusMessageIter iter, dict; + DBusMessage *msg; + + if (connection == NULL) + return; + + if (ipcp_gotoptions[0].ouraddr == 0) + return; + + msg = dbus_message_new_method_call(busname, path, + interface, "notify"); + if (msg == NULL) + return; + + dbus_message_set_no_reply(msg, TRUE); + + dbus_message_append_args(msg, + DBUS_TYPE_STRING, &reason, DBUS_TYPE_INVALID); + + dbus_message_iter_init_append(msg, &iter); + + dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, + DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING + DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_STRING_AS_STRING + DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict); + + append(&dict, "INTERNAL_IFNAME", ifname); + + inet_ntop(AF_INET, &ipcp_gotoptions[0].ouraddr, buf, INET_ADDRSTRLEN); + append(&dict, "INTERNAL_IP4_ADDRESS", buf); + + strcpy(buf, "255.255.255.255"); + append(&dict, "INTERNAL_IP4_NETMASK", buf); + + if (ipcp_gotoptions[0].dnsaddr[0] || ipcp_gotoptions[0].dnsaddr[1]) { + memset(dns, 0, sizeof(dns)); + dns[0] = '\0'; + + if (ipcp_gotoptions[0].dnsaddr[0]) { + inet_ntop(AF_INET, &ipcp_gotoptions[0].dnsaddr[0], + buf, INET_ADDRSTRLEN); + strcat(dns, buf); + + add_blank = TRUE; + } + + if (ipcp_gotoptions[0].dnsaddr[1]) { + inet_ntop(AF_INET, &ipcp_gotoptions[0].dnsaddr[1], + buf, INET_ADDRSTRLEN); + if (add_blank == TRUE) + strcat(dns, " "); + + strcat(dns, buf); + } + append(&dict, "INTERNAL_IP4_DNS", dns); + } + + append(&dict, "MTU", "1400"); + + dbus_message_iter_close_container(&iter, &dict); + + dbus_connection_send(connection, msg, NULL); + + dbus_connection_flush(connection); + + dbus_message_unref(msg); +} + +static void ppp_exit(void *data, int arg) +{ + if (connection != NULL) { + dbus_connection_unref(connection); + connection = NULL; + } + + if (busname != NULL) { + free(busname); + busname = NULL; + } + + if (interface != NULL) { + free(interface); + interface = NULL; + } + + if (path != NULL) { + free(path); + path = NULL; + } +} + +static void ppp_phase_change(void *data, int arg) +{ + const char *reason = "disconnect"; + DBusMessage *msg; + + if (connection == NULL) + return; + + if (arg == PHASE_DEAD || arg == PHASE_DISCONNECT) { + msg = dbus_message_new_method_call(busname, path, + interface, "notify"); + if (msg == NULL) + return; + + dbus_message_set_no_reply(msg, TRUE); + + dbus_message_append_args(msg, + DBUS_TYPE_STRING, &reason, DBUS_TYPE_INVALID); + + dbus_connection_send(connection, msg, NULL); + + dbus_connection_flush(connection); + + dbus_message_unref(msg); + } +} + +int plugin_init(void) +{ + DBusError error; + static const char *bus, *inter, *p; + + dbus_error_init(&error); + + bus = getenv("CONNMAN_BUSNAME"); + inter = getenv("CONNMAN_INTERFACE"); + p = getenv("CONNMAN_PATH"); + + if (bus == NULL || inter == NULL || p == NULL) + return -1; + + busname = strdup(bus); + interface = strdup(inter); + path = strdup(p); + + if (busname == NULL || interface == NULL || path == NULL) { + ppp_exit(NULL, 0); + return -1; + } + + connection = dbus_bus_get(DBUS_BUS_SYSTEM, &error); + if (connection == NULL) { + if (dbus_error_is_set(&error) == TRUE) + dbus_error_free(&error); + + ppp_exit(NULL, 0); + return -1; + } + + pap_passwd_hook = ppp_get_secret; + chap_passwd_hook = ppp_get_secret; + + chap_check_hook = ppp_have_secret; + pap_check_hook = ppp_have_secret; + + add_notifier(&ip_up_notifier, ppp_up, NULL); + add_notifier(&phasechange, ppp_phase_change, NULL); + add_notifier(&exitnotify, ppp_exit, connection); + + return 0; +} |