diff options
Diffstat (limited to 'src/ppp-manager/nm-ppp-manager.c')
| -rw-r--r-- | src/ppp-manager/nm-ppp-manager.c | 1058 |
1 files changed, 1058 insertions, 0 deletions
diff --git a/src/ppp-manager/nm-ppp-manager.c b/src/ppp-manager/nm-ppp-manager.c new file mode 100644 index 00000000..148ad2cf --- /dev/null +++ b/src/ppp-manager/nm-ppp-manager.c @@ -0,0 +1,1058 @@ +/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */ +/* NetworkManager -- Network link manager + * + * 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. + * + * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Copyright (C) 2008 Novell, Inc. + * Copyright (C) 2008 - 2010 Red Hat, Inc. + */ + +#include <sys/types.h> +#include <sys/wait.h> +#include <signal.h> +#include <string.h> +#include <unistd.h> +#include <arpa/inet.h> +#include <stdlib.h> + +#include <errno.h> +#include <sys/socket.h> +#include <sys/ioctl.h> +#include <asm/types.h> +#include <net/if.h> +#include <sys/stat.h> + +#include <linux/ppp_defs.h> +#ifndef aligned_u64 +#define aligned_u64 unsigned long long __attribute__((aligned(8))) +#endif +#include <linux/if_ppp.h> + +#include "NetworkManager.h" +#include "nm-glib-compat.h" +#include "nm-ppp-manager.h" +#include "nm-setting-connection.h" +#include "nm-setting-ppp.h" +#include "nm-setting-pppoe.h" +#include "nm-setting-gsm.h" +#include "nm-setting-cdma.h" +#include "nm-dbus-manager.h" +#include "nm-logging.h" +#include "nm-marshal.h" + +static void impl_ppp_manager_need_secrets (NMPPPManager *manager, + DBusGMethodInvocation *context); + +static gboolean impl_ppp_manager_set_state (NMPPPManager *manager, + guint32 state, + GError **err); + +static gboolean impl_ppp_manager_set_ip4_config (NMPPPManager *manager, + GHashTable *config, + GError **err); + +#include "nm-ppp-manager-glue.h" + +#define NM_PPPD_PLUGIN PLUGINDIR "/nm-pppd-plugin.so" +#define PPP_MANAGER_SECRET_TRIES "ppp-manager-secret-tries" + +typedef struct { + GPid pid; + NMDBusManager *dbus_manager; + char *dbus_path; + + char *parent_iface; + + NMActRequest *act_req; + DBusGMethodInvocation *pending_secrets_context; + + guint32 ppp_watch_id; + guint32 ppp_timeout_handler; + + /* Monitoring */ + char *ip_iface; + int monitor_fd; + guint monitor_id; +} NMPPPManagerPrivate; + +#define NM_PPP_MANAGER_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), NM_TYPE_PPP_MANAGER, NMPPPManagerPrivate)) + +G_DEFINE_TYPE (NMPPPManager, nm_ppp_manager, G_TYPE_OBJECT) + +enum { + STATE_CHANGED, + IP4_CONFIG, + STATS, + + LAST_SIGNAL +}; + +static guint signals[LAST_SIGNAL] = { 0 }; + +enum { + PROP_0, + PROP_PARENT_IFACE, + LAST_PROP +}; + +typedef enum { + NM_PPP_MANAGER_ERROR_UNKOWN +} NMPPPManagerError; + +GQuark +nm_ppp_manager_error_quark (void) +{ + static GQuark quark; + + if (!quark) + quark = g_quark_from_static_string ("nm_ppp_manager_error"); + + return quark; +} + +static void +nm_ppp_manager_init (NMPPPManager *manager) +{ +} + +static GObject * +constructor (GType type, + guint n_construct_params, + GObjectConstructParam *construct_params) +{ + GObject *object; + NMPPPManagerPrivate *priv; + DBusGConnection *connection; + static guint32 counter = 0; + + object = G_OBJECT_CLASS (nm_ppp_manager_parent_class)->constructor (type, + n_construct_params, + construct_params); + if (!object) + return NULL; + + priv = NM_PPP_MANAGER_GET_PRIVATE (object); + priv->dbus_manager = nm_dbus_manager_get (); + if (!priv->dbus_manager) { + g_object_unref (object); + return NULL; + } + + connection = nm_dbus_manager_get_connection (priv->dbus_manager); + priv->dbus_path = g_strdup_printf (NM_DBUS_PATH "/PPP/%d", counter++); + dbus_g_connection_register_g_object (connection, priv->dbus_path, object); + + return object; +} + +static void +dispose (GObject *object) +{ + NMPPPManagerPrivate *priv = NM_PPP_MANAGER_GET_PRIVATE (object); + + nm_ppp_manager_stop (NM_PPP_MANAGER (object)); + + g_object_unref (priv->act_req); + g_object_unref (priv->dbus_manager); + + G_OBJECT_CLASS (nm_ppp_manager_parent_class)->dispose (object); +} + +static void +finalize (GObject *object) +{ + NMPPPManagerPrivate *priv = NM_PPP_MANAGER_GET_PRIVATE (object); + + g_free (priv->ip_iface); + g_free (priv->parent_iface); + + G_OBJECT_CLASS (nm_ppp_manager_parent_class)->finalize (object); +} + +static void +set_property (GObject *object, guint prop_id, + const GValue *value, GParamSpec *pspec) +{ + NMPPPManagerPrivate *priv = NM_PPP_MANAGER_GET_PRIVATE (object); + + switch (prop_id) { + case PROP_PARENT_IFACE: + if (priv->parent_iface) + g_free (priv->parent_iface); + priv->parent_iface = g_value_dup_string (value); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +get_property (GObject *object, guint prop_id, + GValue *value, GParamSpec *pspec) +{ + NMPPPManagerPrivate *priv = NM_PPP_MANAGER_GET_PRIVATE (object); + + switch (prop_id) { + case PROP_PARENT_IFACE: + g_value_set_string (value, priv->parent_iface); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +nm_ppp_manager_class_init (NMPPPManagerClass *manager_class) +{ + GObjectClass *object_class = G_OBJECT_CLASS (manager_class); + + g_type_class_add_private (manager_class, sizeof (NMPPPManagerPrivate)); + + object_class->constructor = constructor; + object_class->dispose = dispose; + object_class->finalize = finalize; + object_class->get_property = get_property; + object_class->set_property = set_property; + + /* Properties */ + g_object_class_install_property + (object_class, PROP_PARENT_IFACE, + g_param_spec_string (NM_PPP_MANAGER_PARENT_IFACE, + "ParentIface", + "Parent interface", + NULL, + G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); + + /* signals */ + signals[STATE_CHANGED] = + g_signal_new ("state-changed", + G_OBJECT_CLASS_TYPE (object_class), + G_SIGNAL_RUN_FIRST, + G_STRUCT_OFFSET (NMPPPManagerClass, state_changed), + NULL, NULL, + g_cclosure_marshal_VOID__UINT, + G_TYPE_NONE, 1, + G_TYPE_UINT); + + signals[IP4_CONFIG] = + g_signal_new ("ip4-config", + G_OBJECT_CLASS_TYPE (object_class), + G_SIGNAL_RUN_FIRST, + G_STRUCT_OFFSET (NMPPPManagerClass, ip4_config), + NULL, NULL, + _nm_marshal_VOID__STRING_OBJECT, + G_TYPE_NONE, 2, + G_TYPE_STRING, + G_TYPE_OBJECT); + + signals[STATS] = + g_signal_new ("stats", + G_OBJECT_CLASS_TYPE (object_class), + G_SIGNAL_RUN_FIRST, + G_STRUCT_OFFSET (NMPPPManagerClass, stats), + NULL, NULL, + _nm_marshal_VOID__UINT_UINT, + G_TYPE_NONE, 2, + G_TYPE_UINT, G_TYPE_UINT); + + dbus_g_object_type_install_info (G_TYPE_FROM_CLASS (manager_class), + &dbus_glib_nm_ppp_manager_object_info); +} + +NMPPPManager * +nm_ppp_manager_new (const char *iface) +{ + g_return_val_if_fail (iface != NULL, NULL); + + return (NMPPPManager *) g_object_new (NM_TYPE_PPP_MANAGER, + NM_PPP_MANAGER_PARENT_IFACE, iface, + NULL); +} + +/*******************************************/ + +static gboolean +monitor_cb (gpointer user_data) +{ + NMPPPManager *manager = NM_PPP_MANAGER (user_data); + NMPPPManagerPrivate *priv = NM_PPP_MANAGER_GET_PRIVATE (manager); + struct ifpppstatsreq req; + + memset (&req, 0, sizeof (req)); + req.stats_ptr = (caddr_t) &req.stats; + + strncpy (req.ifr__name, priv->ip_iface, sizeof (req.ifr__name)); + if (ioctl (priv->monitor_fd, SIOCGPPPSTATS, &req) < 0) { + nm_log_warn (LOGD_PPP, "could not read ppp stats: %s", strerror (errno)); + } else { + g_signal_emit (manager, signals[STATS], 0, + req.stats.p.ppp_ibytes, + req.stats.p.ppp_obytes); + } + + return TRUE; +} + +static void +monitor_stats (NMPPPManager *manager) +{ + NMPPPManagerPrivate *priv = NM_PPP_MANAGER_GET_PRIVATE (manager); + + priv->monitor_fd = socket (AF_INET, SOCK_DGRAM, 0); + if (priv->monitor_fd > 0) + priv->monitor_id = g_timeout_add_seconds (5, monitor_cb, manager); + else + nm_log_warn (LOGD_PPP, "could not monitor PPP stats: %s", strerror (errno)); +} + +/*******************************************/ + +static void +remove_timeout_handler (NMPPPManager *manager) +{ + NMPPPManagerPrivate *priv = NM_PPP_MANAGER_GET_PRIVATE (manager); + + if (priv->ppp_timeout_handler) { + g_source_remove (priv->ppp_timeout_handler); + priv->ppp_timeout_handler = 0; + } +} + +static void +impl_ppp_manager_need_secrets (NMPPPManager *manager, + DBusGMethodInvocation *context) +{ + NMPPPManagerPrivate *priv = NM_PPP_MANAGER_GET_PRIVATE (manager); + NMConnection *connection; + NMSettingConnection *s_con; + const char *connection_type; + const char *setting_name; + guint32 tries; + GPtrArray *hints = NULL; + const char *hint1 = NULL, *hint2 = NULL; + + connection = nm_act_request_get_connection (priv->act_req); + + s_con = NM_SETTING_CONNECTION (nm_connection_get_setting (connection, NM_TYPE_SETTING_CONNECTION)); + g_assert (s_con); + + connection_type = nm_setting_connection_get_connection_type (s_con); + g_assert (connection_type); + + nm_connection_clear_secrets (connection); + setting_name = nm_connection_need_secrets (connection, &hints); + if (!setting_name) { + NMSetting *setting; + + setting = nm_connection_get_setting_by_name (connection, connection_type); + if (setting) { + const char *username = NULL; + const char *password = NULL; + + /* FIXME: push this down to the settings and keep PPP manager generic */ + if (NM_IS_SETTING_PPPOE (setting)) { + username = nm_setting_pppoe_get_username (NM_SETTING_PPPOE (setting)); + password = nm_setting_pppoe_get_password (NM_SETTING_PPPOE (setting)); + } else if (NM_IS_SETTING_GSM (setting)) { + username = nm_setting_gsm_get_username (NM_SETTING_GSM (setting)); + password = nm_setting_gsm_get_password (NM_SETTING_GSM (setting)); + } else if (NM_IS_SETTING_CDMA (setting)) { + username = nm_setting_cdma_get_username (NM_SETTING_CDMA (setting)); + password = nm_setting_cdma_get_password (NM_SETTING_CDMA (setting)); + } + + /* If secrets are not required, send the existing username and password + * back to the PPP plugin immediately. + */ + priv->pending_secrets_context = context; + nm_ppp_manager_update_secrets (manager, + priv->parent_iface, + username ? username : "", + password ? password : "", + NULL); + } else { + GError *err = NULL; + + g_set_error (&err, NM_PPP_MANAGER_ERROR, NM_PPP_MANAGER_ERROR_UNKOWN, + "Missing type-specific setting; no secrets could be found."); + nm_log_warn (LOGD_PPP, "%s", err->message); + dbus_g_method_return_error (context, err); + } + return; + } + + /* Extract hints */ + if (hints) { + if (hints->len > 0) + hint1 = g_ptr_array_index (hints, 0); + if (hints->len > 1) + hint2 = g_ptr_array_index (hints, 1); + } + + tries = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (connection), PPP_MANAGER_SECRET_TRIES)); + /* Only ask for completely new secrets after retrying them once; some PPP + * servers (T-Mobile USA) appear to ask a few times when they actually don't + * even care what you pass back. + */ + nm_act_request_get_secrets (priv->act_req, + setting_name, + tries > 1 ? TRUE : FALSE, + SECRETS_CALLER_PPP, + hint1, + hint2); + g_object_set_data (G_OBJECT (connection), PPP_MANAGER_SECRET_TRIES, GUINT_TO_POINTER (++tries)); + priv->pending_secrets_context = context; + + if (hints) + g_ptr_array_free (hints, TRUE); +} + +static gboolean impl_ppp_manager_set_state (NMPPPManager *manager, + guint32 state, + GError **err) +{ + g_signal_emit (manager, signals[STATE_CHANGED], 0, state); + + return TRUE; +} + +static gboolean +impl_ppp_manager_set_ip4_config (NMPPPManager *manager, + GHashTable *config_hash, + GError **err) +{ + NMPPPManagerPrivate *priv = NM_PPP_MANAGER_GET_PRIVATE (manager); + NMConnection *connection; + NMSettingPPP *s_ppp; + NMIP4Config *config; + NMIP4Address *addr; + GValue *val; + int i; + + nm_log_info (LOGD_PPP, "PPP manager(IP Config Get) reply received."); + + remove_timeout_handler (manager); + + config = nm_ip4_config_new (); + addr = nm_ip4_address_new (); + nm_ip4_address_set_prefix (addr, 32); + + val = (GValue *) g_hash_table_lookup (config_hash, NM_PPP_IP4_CONFIG_GATEWAY); + if (val) { + nm_ip4_address_set_gateway (addr, g_value_get_uint (val)); + nm_ip4_config_set_ptp_address (config, g_value_get_uint (val)); + } + + val = (GValue *) g_hash_table_lookup (config_hash, NM_PPP_IP4_CONFIG_ADDRESS); + if (val) + nm_ip4_address_set_address (addr, g_value_get_uint (val)); + + val = (GValue *) g_hash_table_lookup (config_hash, NM_PPP_IP4_CONFIG_PREFIX); + if (val) + nm_ip4_address_set_prefix (addr, g_value_get_uint (val)); + + if (nm_ip4_address_get_address (addr) && nm_ip4_address_get_prefix (addr)) { + nm_ip4_config_take_address (config, addr); + } else { + nm_log_err (LOGD_PPP, "invalid IPv4 address received!"); + nm_ip4_address_unref (addr); + goto out; + } + + val = (GValue *) g_hash_table_lookup (config_hash, NM_PPP_IP4_CONFIG_DNS); + if (val) { + GArray *dns = (GArray *) g_value_get_boxed (val); + + for (i = 0; i < dns->len; i++) + nm_ip4_config_add_nameserver (config, g_array_index (dns, guint, i)); + } + + val = (GValue *) g_hash_table_lookup (config_hash, NM_PPP_IP4_CONFIG_WINS); + if (val) { + GArray *wins = (GArray *) g_value_get_boxed (val); + + for (i = 0; i < wins->len; i++) + nm_ip4_config_add_wins (config, g_array_index (wins, guint, i)); + } + + val = (GValue *) g_hash_table_lookup (config_hash, NM_PPP_IP4_CONFIG_INTERFACE); + if (!val || !G_VALUE_HOLDS_STRING (val)) { + nm_log_err (LOGD_PPP, "no interface received!"); + goto out; + } + priv->ip_iface = g_value_dup_string (val); + + /* Got successful IP4 config; obviously the secrets worked */ + connection = nm_act_request_get_connection (priv->act_req); + g_assert (connection); + g_object_set_data (G_OBJECT (connection), PPP_MANAGER_SECRET_TRIES, NULL); + + /* Merge in custom MTU */ + s_ppp = (NMSettingPPP *) nm_connection_get_setting (connection, NM_TYPE_SETTING_PPP); + if (s_ppp) { + guint32 mtu = nm_setting_ppp_get_mtu (s_ppp); + + if (mtu) + nm_ip4_config_set_mtu (config, mtu); + } + + /* Push the IP4 config up to the device */ + g_signal_emit (manager, signals[IP4_CONFIG], 0, priv->ip_iface, config); + + monitor_stats (manager); + + out: + g_object_unref (config); + + return TRUE; +} + +/*******************************************/ + + + +typedef struct { + GPtrArray *array; + GStringChunk *chunk; +} NMCmdLine; + +static NMCmdLine * +nm_cmd_line_new (void) +{ + NMCmdLine *cmd; + + cmd = g_slice_new (NMCmdLine); + cmd->array = g_ptr_array_new (); + cmd->chunk = g_string_chunk_new (1024); + + return cmd; +} + +static void +nm_cmd_line_destroy (NMCmdLine *cmd) +{ + g_ptr_array_free (cmd->array, TRUE); + g_string_chunk_free (cmd->chunk); + g_slice_free (NMCmdLine, cmd); +} + +static char * +nm_cmd_line_to_str (NMCmdLine *cmd) +{ + char *str; + + g_ptr_array_add (cmd->array, NULL); + str = g_strjoinv (" ", (gchar **) cmd->array->pdata); + g_ptr_array_remove_index (cmd->array, cmd->array->len - 1); + + return str; +} + +static void +nm_cmd_line_add_string (NMCmdLine *cmd, const char *str) +{ + g_ptr_array_add (cmd->array, g_string_chunk_insert (cmd->chunk, str)); +} + +static void +nm_cmd_line_add_int (NMCmdLine *cmd, int i) +{ + char *str; + + str = g_strdup_printf ("%d", i); + nm_cmd_line_add_string (cmd, str); + g_free (str); +} + +/*******************************************/ + +static inline const char * +nm_find_pppd (void) +{ + static const char *pppd_binary_paths[] = { + "/usr/local/sbin/pppd", + "/usr/sbin/pppd", + "/sbin/pppd", + NULL + }; + + const char **pppd_binary = pppd_binary_paths; + + while (*pppd_binary != NULL) { + if (g_file_test (*pppd_binary, G_FILE_TEST_EXISTS)) + break; + pppd_binary++; + } + + return *pppd_binary; +} + +static void +ppp_exit_code (guint pppd_exit_status, GPid pid) +{ + const char *msg; + + switch (pppd_exit_status) { + case 1: + msg = "Fatal pppd error"; + break; + case 2: + msg = "pppd options error"; + break; + case 3: + msg = "No root priv error"; + break; + case 4: + msg = "No ppp module error"; + break; + case 5: + msg = "pppd received a signal"; + break; + case 6: + msg = "Serial port lock failed"; + break; + case 7: + msg = "Serial port open failed"; + break; + case 8: + msg = "Connect script failed"; + break; + case 9: + msg = "Pty program error"; + break; + case 10: + msg = "PPP negotiation failed"; + break; + case 11: + msg = "Peer didn't authenticatie itself"; + break; + case 12: + msg = "Link idle: Idle Seconds reached."; + break; + case 13: + msg = "Connect time limit reached."; + break; + case 14: + msg = "Callback negotiated, call should come back."; + break; + case 15: + msg = "Lack of LCP echo responses"; + break; + case 16: + msg = "A modem hung up the phone"; + break; + case 17: + msg = "Loopback detected"; + break; + case 18: + msg = "The init script failed"; + break; + case 19: + msg = "Authentication error.\n" + "We failed to authenticate ourselves to the peer.\n" + "Maybe bad account or password?"; + break; + default: + msg = "Unknown error"; + } + + nm_log_warn (LOGD_PPP, "pppd pid %d exited with error: %s", pid, msg); +} + +static void +ppp_watch_cb (GPid pid, gint status, gpointer user_data) +{ + NMPPPManager *manager = NM_PPP_MANAGER (user_data); + NMPPPManagerPrivate *priv = NM_PPP_MANAGER_GET_PRIVATE (manager); + guint err; + + g_assert (pid == priv->pid); + + if (WIFEXITED (status)) { + err = WEXITSTATUS (status); + if (err != 0) + ppp_exit_code (err, priv->pid); + } else if (WIFSTOPPED (status)) { + nm_log_info (LOGD_PPP, "pppd pid %d stopped unexpectedly with signal %d", priv->pid, WSTOPSIG (status)); + } else if (WIFSIGNALED (status)) { + nm_log_info (LOGD_PPP, "pppd pid %d died with signal %d", priv->pid, WTERMSIG (status)); + } else + nm_log_info (LOGD_PPP, "pppd pid %d died from an unknown cause", priv->pid); + + nm_log_dbg (LOGD_PPP, "pppd pid %d cleaned up", priv->pid); + priv->pid = 0; + g_signal_emit (manager, signals[STATE_CHANGED], 0, NM_PPP_STATUS_DEAD); +} + +static gboolean +pppd_timed_out (gpointer data) +{ + NMPPPManager *manager = NM_PPP_MANAGER (data); + + nm_log_warn (LOGD_PPP, "pppd timed out or didn't initialize our dbus module"); + nm_ppp_manager_stop (manager); + + g_signal_emit (manager, signals[STATE_CHANGED], 0, NM_PPP_STATUS_DEAD); + + return FALSE; +} + +static NMCmdLine * +create_pppd_cmd_line (NMPPPManager *self, + NMSettingPPP *setting, + NMSettingPPPOE *pppoe, + const char *ppp_name, + GError **err) +{ + NMPPPManagerPrivate *priv = NM_PPP_MANAGER_GET_PRIVATE (self); + const char *ppp_binary; + NMCmdLine *cmd; + const char *ppp_debug; + + ppp_binary = nm_find_pppd (); + if (!ppp_binary) { + g_set_error (err, NM_PPP_MANAGER_ERROR, NM_PPP_MANAGER_ERROR, + "Could not find ppp binary."); + return NULL; + } + + /* Create pppd command line */ + cmd = nm_cmd_line_new (); + nm_cmd_line_add_string (cmd, ppp_binary); + + nm_cmd_line_add_string (cmd, "nodetach"); + nm_cmd_line_add_string (cmd, "lock"); + + /* NM handles setting the default route */ + nm_cmd_line_add_string (cmd, "nodefaultroute"); + + ppp_debug = getenv ("NM_PPP_DEBUG"); + if (ppp_debug) + nm_cmd_line_add_string (cmd, "debug"); + + if (ppp_name) { + nm_cmd_line_add_string (cmd, "user"); + nm_cmd_line_add_string (cmd, ppp_name); + } + + if (pppoe) { + char *dev_str; + const char *pppoe_service; + + nm_cmd_line_add_string (cmd, "plugin"); + nm_cmd_line_add_string (cmd, "rp-pppoe.so"); + + dev_str = g_strdup_printf ("nic-%s", priv->parent_iface); + nm_cmd_line_add_string (cmd, dev_str); + g_free (dev_str); + + pppoe_service = nm_setting_pppoe_get_service (pppoe); + if (pppoe_service) { + nm_cmd_line_add_string (cmd, "rp_pppoe_service"); + nm_cmd_line_add_string (cmd, pppoe_service); + } + } else { + nm_cmd_line_add_string (cmd, priv->parent_iface); + /* Don't send some random address as the local address */ + nm_cmd_line_add_string (cmd, "noipdefault"); + } + + if (nm_setting_ppp_get_baud (setting)) + nm_cmd_line_add_int (cmd, nm_setting_ppp_get_baud (setting)); + + /* noauth by default, because we certainly don't have any information + * with which to verify anything the peer gives us if we ask it to + * authenticate itself, which is what 'auth' really means. + */ + nm_cmd_line_add_string (cmd, "noauth"); + + if (nm_setting_ppp_get_refuse_eap (setting)) + nm_cmd_line_add_string (cmd, "refuse-eap"); + if (nm_setting_ppp_get_refuse_pap (setting)) + nm_cmd_line_add_string (cmd, "refuse-pap"); + if (nm_setting_ppp_get_refuse_chap (setting)) + nm_cmd_line_add_string (cmd, "refuse-chap"); + if (nm_setting_ppp_get_refuse_mschap (setting)) + nm_cmd_line_add_string (cmd, "refuse-mschap"); + if (nm_setting_ppp_get_refuse_mschapv2 (setting)) + nm_cmd_line_add_string (cmd, "refuse-mschap-v2"); + if (nm_setting_ppp_get_nobsdcomp (setting)) + nm_cmd_line_add_string (cmd, "nobsdcomp"); + if (nm_setting_ppp_get_nodeflate (setting)) + nm_cmd_line_add_string (cmd, "nodeflate"); + if (nm_setting_ppp_get_require_mppe (setting)) + nm_cmd_line_add_string (cmd, "require-mppe"); + if (nm_setting_ppp_get_require_mppe_128 (setting)) + nm_cmd_line_add_string (cmd, "require-mppe-128"); + if (nm_setting_ppp_get_mppe_stateful (setting)) + nm_cmd_line_add_string (cmd, "mppe-stateful"); + if (nm_setting_ppp_get_crtscts (setting)) + nm_cmd_line_add_string (cmd, "crtscts"); + + /* Always ask for DNS, we don't have to use them if the connection + * overrides the returned servers. + */ + nm_cmd_line_add_string (cmd, "usepeerdns"); + + if (nm_setting_ppp_get_mru (setting)) { + nm_cmd_line_add_string (cmd, "mru"); + nm_cmd_line_add_int (cmd, nm_setting_ppp_get_mru (setting)); + } + + if (nm_setting_ppp_get_mtu (setting)) { + nm_cmd_line_add_string (cmd, "mtu"); + nm_cmd_line_add_int (cmd, nm_setting_ppp_get_mtu (setting)); + } + + nm_cmd_line_add_string (cmd, "lcp-echo-failure"); + nm_cmd_line_add_int (cmd, nm_setting_ppp_get_lcp_echo_failure (setting)); + + nm_cmd_line_add_string (cmd, "lcp-echo-interval"); + nm_cmd_line_add_int (cmd, nm_setting_ppp_get_lcp_echo_interval (setting)); + + nm_cmd_line_add_string (cmd, "ipparam"); + nm_cmd_line_add_string (cmd, priv->dbus_path); + + nm_cmd_line_add_string (cmd, "plugin"); + nm_cmd_line_add_string (cmd, NM_PPPD_PLUGIN); + + return cmd; +} + +static void +pppd_child_setup (gpointer user_data G_GNUC_UNUSED) +{ + /* We are in the child process at this point */ + pid_t pid = getpid (); + setpgid (pid, pid); +} + +static void +pppoe_fill_defaults (NMSettingPPP *setting) +{ + if (!nm_setting_ppp_get_mtu (setting)) + g_object_set (setting, NM_SETTING_PPP_MTU, (guint32) 1492, NULL); + + if (!nm_setting_ppp_get_mru (setting)) + g_object_set (setting, NM_SETTING_PPP_MRU, (guint32) 1492, NULL); + + if (!nm_setting_ppp_get_lcp_echo_interval (setting)) + g_object_set (setting, NM_SETTING_PPP_LCP_ECHO_INTERVAL, (guint32) 20, NULL); + + if (!nm_setting_ppp_get_lcp_echo_failure (setting)) + g_object_set (setting, NM_SETTING_PPP_LCP_ECHO_FAILURE, (guint32) 3, NULL); + + g_object_set (setting, + NM_SETTING_PPP_NOAUTH, TRUE, + NM_SETTING_PPP_NODEFLATE, TRUE, + NULL); + + /* FIXME: These commented settings should be set as well, update NMSettingPPP first. */ +#if 0 + setting->noipdefault = TRUE; + setting->default_asyncmap = TRUE; + setting->defaultroute = TRUE; + setting->hide_password = TRUE; + setting->noaccomp = TRUE; + setting->nopcomp = TRUE; + setting->novj = TRUE; + setting->novjccomp = TRUE; +#endif +} + +gboolean +nm_ppp_manager_start (NMPPPManager *manager, + NMActRequest *req, + const char *ppp_name, + guint32 timeout_secs, + GError **err) +{ + NMPPPManagerPrivate *priv; + NMConnection *connection; + NMSettingPPP *s_ppp; + gboolean s_ppp_created = FALSE; + NMSettingPPPOE *pppoe_setting; + NMCmdLine *ppp_cmd; + char *cmd_str; + struct stat st; + int ignored; + + g_return_val_if_fail (NM_IS_PPP_MANAGER (manager), FALSE); + g_return_val_if_fail (NM_IS_ACT_REQUEST (req), FALSE); + + priv = NM_PPP_MANAGER_GET_PRIVATE (manager); + + priv->pid = 0; + + /* Make sure /dev/ppp exists (bgo #533064) */ + if (stat ("/dev/ppp", &st) || !S_ISCHR (st.st_mode)) + ignored = system ("/sbin/modprobe ppp_generic"); + + connection = nm_act_request_get_connection (req); + g_assert (connection); + + s_ppp = (NMSettingPPP *) nm_connection_get_setting (connection, NM_TYPE_SETTING_PPP); + if (!s_ppp) { + /* If the PPP settings are all default we may not have a PPP setting yet, + * so just make a default one here. + */ + s_ppp = NM_SETTING_PPP (nm_setting_ppp_new ()); + s_ppp_created = TRUE; + } + + pppoe_setting = (NMSettingPPPOE *) nm_connection_get_setting (connection, NM_TYPE_SETTING_PPPOE); + if (pppoe_setting) + pppoe_fill_defaults (s_ppp); + + ppp_cmd = create_pppd_cmd_line (manager, s_ppp, pppoe_setting, ppp_name, err); + if (!ppp_cmd) + goto out; + + g_ptr_array_add (ppp_cmd->array, NULL); + + nm_log_info (LOGD_PPP, "starting PPP connection"); + + cmd_str = nm_cmd_line_to_str (ppp_cmd); + nm_log_dbg (LOGD_PPP, "command line: %s", cmd_str); + g_free (cmd_str); + + priv->pid = 0; + if (!g_spawn_async (NULL, (char **) ppp_cmd->array->pdata, NULL, + G_SPAWN_DO_NOT_REAP_CHILD, + pppd_child_setup, + NULL, &priv->pid, err)) { + goto out; + } + + nm_log_info (LOGD_PPP, "pppd started with pid %d", priv->pid); + + priv->ppp_watch_id = g_child_watch_add (priv->pid, (GChildWatchFunc) ppp_watch_cb, manager); + priv->ppp_timeout_handler = g_timeout_add_seconds (timeout_secs, pppd_timed_out, manager); + priv->act_req = g_object_ref (req); + + out: + if (s_ppp_created) + g_object_unref (s_ppp); + + if (ppp_cmd) + nm_cmd_line_destroy (ppp_cmd); + + return priv->pid > 0; +} + +void +nm_ppp_manager_update_secrets (NMPPPManager *manager, + const char *device, + const char *username, + const char *password, + const char *error_message) +{ + NMPPPManagerPrivate *priv = NM_PPP_MANAGER_GET_PRIVATE (manager); + + g_return_if_fail (NM_IS_PPP_MANAGER (manager)); + g_return_if_fail (device != NULL); + g_return_if_fail (priv->pending_secrets_context != NULL); + + if (error_message) { + g_return_if_fail (username == NULL); + g_return_if_fail (password == NULL); + } else { + g_return_if_fail (username != NULL); + g_return_if_fail (password != NULL); + } + + if (error_message) { + GError *err = NULL; + + g_set_error (&err, NM_PPP_MANAGER_ERROR, NM_PPP_MANAGER_ERROR_UNKOWN, "%s", error_message); + nm_log_warn (LOGD_PPP, "%s", error_message); + dbus_g_method_return_error (priv->pending_secrets_context, err); + g_error_free (err); + } else { + /* This is sort of a hack but... + pppd plugin only ever needs username and password. + Passing the full connection there would mean some bloat: + the plugin would need to link against libnm-util just to parse this. + So instead, let's just send what it needs */ + + dbus_g_method_return (priv->pending_secrets_context, username, password); + } + priv->pending_secrets_context = NULL; +} + +static gboolean +ensure_killed (gpointer data) +{ + int pid = GPOINTER_TO_INT (data); + + if (kill (pid, 0) == 0) + kill (pid, SIGKILL); + + /* ensure the child is reaped */ + nm_log_dbg (LOGD_PPP, "waiting for pppd pid %d to exit", pid); + waitpid (pid, NULL, 0); + nm_log_dbg (LOGD_PPP, "pppd pid %d cleaned up", pid); + + return FALSE; +} + +void +nm_ppp_manager_stop (NMPPPManager *manager) +{ + NMPPPManagerPrivate *priv; + + g_return_if_fail (NM_IS_PPP_MANAGER (manager)); + + priv = NM_PPP_MANAGER_GET_PRIVATE (manager); + + if (priv->monitor_id) { + g_source_remove (priv->monitor_id); + priv->monitor_id = 0; + } + + if (priv->monitor_fd) { + /* Get the stats one last time */ + monitor_cb (manager); + close (priv->monitor_fd); + priv->monitor_fd = 0; + } + + if (priv->ppp_timeout_handler) { + g_source_remove (priv->ppp_timeout_handler); + priv->ppp_timeout_handler = 0; + } + + if (priv->ppp_watch_id) { + g_source_remove (priv->ppp_watch_id); + priv->ppp_watch_id = 0; + } + + if (priv->pid) { + if (kill (priv->pid, SIGTERM) == 0) + g_timeout_add_seconds (2, ensure_killed, GINT_TO_POINTER (priv->pid)); + else { + kill (priv->pid, SIGKILL); + + /* ensure the child is reaped */ + nm_log_dbg (LOGD_PPP, "waiting for pppd pid %d to exit", priv->pid); + waitpid (priv->pid, NULL, 0); + nm_log_dbg (LOGD_PPP, "pppd pid %d cleaned up", priv->pid); + } + + priv->pid = 0; + } +} |