X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=src%2Fdhcp.c;h=f4de736a5ab45ad56b92da888d5f892f6c7b7d03;hb=b8162e19cfc7b3ce25b72983c0df4de6e14cbafe;hp=1b7bd8769dead3f6c9ad185b8a7329700de0c198;hpb=249a12194decb4b7a06d717bcd5284d1467e759b;p=framework%2Fconnectivity%2Fconnman.git diff --git a/src/dhcp.c b/src/dhcp.c index 1b7bd87..f4de736 100644 --- a/src/dhcp.c +++ b/src/dhcp.c @@ -2,7 +2,7 @@ * * Connection Manager * - * Copyright (C) 2007-2008 Intel Corporation. All rights reserved. + * Copyright (C) 2007-2012 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 @@ -22,82 +22,503 @@ #ifdef HAVE_CONFIG_H #include #endif +#include +#include +#include +#include -#include +#include + +#include #include #include "connman.h" -static GSList *drivers = NULL; +struct connman_dhcp { + struct connman_network *network; + dhcp_cb callback; + + char **nameservers; + char **timeservers; + char *pac; + + GDHCPClient *dhcp_client; +}; -int connman_dhcp_register(struct connman_dhcp_driver *driver) +static GHashTable *network_table; + +static void dhcp_free(struct connman_dhcp *dhcp) { - DBG("driver %p", driver); + g_strfreev(dhcp->nameservers); + g_strfreev(dhcp->timeservers); + g_free(dhcp->pac); - drivers = g_slist_append(drivers, driver); + dhcp->nameservers = NULL; + dhcp->timeservers = NULL; + dhcp->pac = NULL; +} - return 0; +/** + * dhcp_invalidate: Invalidate an existing DHCP lease + * @dhcp: pointer to the DHCP lease to invalidate. + * @callback: flag indicating whether or not to invoke the client callback + * if present. + * + * Invalidates an existing DHCP lease, optionally invoking the client + * callback. The caller may wish to avoid the client callback invocation + * when the invocation of that callback might otherwise unnecessarily upset + * service state due to the IP configuration change implied by this + * invalidation. + */ +static void dhcp_invalidate(struct connman_dhcp *dhcp, connman_bool_t callback) +{ + struct connman_service *service; + struct connman_ipconfig *ipconfig; + int i; + + DBG("dhcp %p callback %u", dhcp, callback); + + if (dhcp == NULL) + return; + + service = __connman_service_lookup_from_network(dhcp->network); + if (service == NULL) + goto out; + + ipconfig = __connman_service_get_ip4config(service); + if (ipconfig == NULL) + goto out; + + __connman_6to4_remove(ipconfig); + + __connman_service_set_domainname(service, NULL); + __connman_service_set_pac(service, NULL); + + if (dhcp->timeservers != NULL) { + for (i = 0; dhcp->timeservers[i] != NULL; i++) { + __connman_service_timeserver_remove(service, + dhcp->timeservers[i]); + } + } + + if (dhcp->nameservers != NULL) { + for (i = 0; dhcp->nameservers[i] != NULL; i++) { + __connman_service_nameserver_remove(service, + dhcp->nameservers[i], FALSE); + } + } + + __connman_ipconfig_set_dhcp_address(ipconfig, + __connman_ipconfig_get_local(ipconfig)); + DBG("last address %s", __connman_ipconfig_get_dhcp_address(ipconfig)); + + __connman_ipconfig_address_remove(ipconfig); + + __connman_ipconfig_set_local(ipconfig, NULL); + __connman_ipconfig_set_broadcast(ipconfig, NULL); + __connman_ipconfig_set_gateway(ipconfig, NULL); + __connman_ipconfig_set_prefixlen(ipconfig, 0); + + if (dhcp->callback != NULL && callback) + dhcp->callback(dhcp->network, FALSE); + +out: + dhcp_free(dhcp); +} + +static void dhcp_valid(struct connman_dhcp *dhcp) +{ + if (dhcp->callback != NULL) + dhcp->callback(dhcp->network, TRUE); } -void connman_dhcp_unregister(struct connman_dhcp_driver *driver) +static void no_lease_cb(GDHCPClient *dhcp_client, gpointer user_data) { - DBG("driver %p", driver); + struct connman_dhcp *dhcp = user_data; - drivers = g_slist_remove(drivers, driver); + DBG("No lease available"); + + dhcp_invalidate(dhcp, TRUE); } -int connman_dhcp_update(struct connman_iface *iface, - enum connman_dhcp_state state, - struct connman_ipv4 *ipv4) +static void lease_lost_cb(GDHCPClient *dhcp_client, gpointer user_data) { - DBG("iface %p state %d", iface, state); + struct connman_dhcp *dhcp = user_data; - if (state == CONNMAN_DHCP_STATE_BOUND) { - DBG("address %s", inet_ntoa(ipv4->address)); - DBG("netmask %s", inet_ntoa(ipv4->netmask)); - DBG("gateway %s", inet_ntoa(ipv4->gateway)); - DBG("network %s", inet_ntoa(ipv4->network)); - DBG("broadcast %s", inet_ntoa(ipv4->broadcast)); - DBG("nameserver %s", inet_ntoa(ipv4->nameserver)); + DBG("Lease lost"); - ipv4->method = CONNMAN_IPV4_METHOD_DHCP; + dhcp_invalidate(dhcp, TRUE); +} - connman_iface_set_ipv4(iface, ipv4); - iface->ipv4 = *ipv4; +static void ipv4ll_lost_cb(GDHCPClient *dhcp_client, gpointer user_data) +{ + struct connman_dhcp *dhcp = user_data; - connman_iface_indicate_configured(iface); - } + DBG("Lease lost"); - return 0; + dhcp_invalidate(dhcp, TRUE); } -int __connman_dhcp_request(struct connman_iface *iface) + +static gboolean compare_string_arrays(char **array_a, char **array_b) { - struct connman_dhcp_driver *driver = g_slist_nth_data(drivers, 0); + int i; - if (iface->flags & CONNMAN_IFACE_FLAG_DHCP) - return -1; + if (array_a == NULL || array_b == NULL) + return FALSE; - if (driver && driver->request) { - iface->flags |= CONNMAN_IFACE_FLAG_DHCP; - return driver->request(iface); + if (g_strv_length(array_a) != g_strv_length(array_b)) + return FALSE; + + for (i = 0; array_a[i] != NULL && + array_b[i] != NULL; i++) { + if (g_strcmp0(array_a[i], array_b[i]) != 0) + return FALSE; } - return -1; + return TRUE; } -int __connman_dhcp_release(struct connman_iface *iface) +static void lease_available_cb(GDHCPClient *dhcp_client, gpointer user_data) { - struct connman_dhcp_driver *driver = g_slist_nth_data(drivers, 0); + struct connman_dhcp *dhcp = user_data; + GList *list, *option = NULL; + char *address, *netmask = NULL, *gateway = NULL; + const char *c_address, *c_gateway; + char *domainname = NULL, *hostname = NULL; + char **nameservers, **timeservers, *pac = NULL; + int ns_entries; + struct connman_ipconfig *ipconfig; + struct connman_service *service; + unsigned char prefixlen, c_prefixlen; + gboolean ip_change; + int i; + + DBG("Lease available"); - if (!(iface->flags & CONNMAN_IFACE_FLAG_DHCP)) - return -1; + service = __connman_service_lookup_from_network(dhcp->network); + if (service == NULL) { + connman_error("Can not lookup service"); + return; + } + + ipconfig = __connman_service_get_ip4config(service); + if (ipconfig == NULL) { + connman_error("Could not lookup ipconfig"); + return; + } + + c_address = __connman_ipconfig_get_local(ipconfig); + c_gateway = __connman_ipconfig_get_gateway(ipconfig); + c_prefixlen = __connman_ipconfig_get_prefixlen(ipconfig); + + address = g_dhcp_client_get_address(dhcp_client); + + __connman_ipconfig_set_dhcp_address(ipconfig, address); + DBG("last address %s", address); + + option = g_dhcp_client_get_option(dhcp_client, G_DHCP_SUBNET); + if (option != NULL) + netmask = g_strdup(option->data); + + option = g_dhcp_client_get_option(dhcp_client, G_DHCP_ROUTER); + if (option != NULL) + gateway = g_strdup(option->data); + + prefixlen = __connman_ipconfig_netmask_prefix_len(netmask); - if (driver && driver->release) { - iface->flags &= ~CONNMAN_IFACE_FLAG_DHCP; - return driver->release(iface); + DBG("c_address %s", c_address); + + if (address != NULL && c_address != NULL && + g_strcmp0(address, c_address) != 0) + ip_change = TRUE; + else if (gateway != NULL && c_gateway != NULL && + g_strcmp0(gateway, c_gateway) != 0) + ip_change = TRUE; + else if (prefixlen != c_prefixlen) + ip_change = TRUE; + else if (c_address == NULL || c_gateway == NULL) + ip_change = TRUE; + else + ip_change = FALSE; + + option = g_dhcp_client_get_option(dhcp_client, G_DHCP_DNS_SERVER); + ns_entries = g_list_length(option); + nameservers = g_try_new0(char *, ns_entries + 1); + if (nameservers != NULL) { + for (i = 0, list = option; list; list = list->next, i++) + nameservers[i] = g_strdup(list->data); + nameservers[ns_entries] = NULL; } - return -1; + option = g_dhcp_client_get_option(dhcp_client, G_DHCP_DOMAIN_NAME); + if (option != NULL) + domainname = g_strdup(option->data); + + option = g_dhcp_client_get_option(dhcp_client, G_DHCP_HOST_NAME); + if (option != NULL) + hostname = g_strdup(option->data); + + option = g_dhcp_client_get_option(dhcp_client, G_DHCP_NTP_SERVER); + ns_entries = g_list_length(option); + timeservers = g_try_new0(char *, ns_entries + 1); + if (timeservers != NULL) { + for (i = 0, list = option; list; list = list->next, i++) + timeservers[i] = g_strdup(list->data); + timeservers[ns_entries] = NULL; + } + + option = g_dhcp_client_get_option(dhcp_client, 252); + if (option != NULL) + pac = g_strdup(option->data); + + __connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_DHCP); + + if (ip_change == TRUE) { + __connman_ipconfig_set_local(ipconfig, address); + __connman_ipconfig_set_prefixlen(ipconfig, prefixlen); + __connman_ipconfig_set_gateway(ipconfig, gateway); + } + + if (compare_string_arrays(nameservers, dhcp->nameservers) == FALSE) { + if (dhcp->nameservers != NULL) { + for (i = 0; dhcp->nameservers[i] != NULL; i++) { + __connman_service_nameserver_remove(service, + dhcp->nameservers[i], FALSE); + } + g_strfreev(dhcp->nameservers); + } + + dhcp->nameservers = nameservers; + + for (i = 0; dhcp->nameservers != NULL && + dhcp->nameservers[i] != NULL; i++) { + __connman_service_nameserver_append(service, + dhcp->nameservers[i], FALSE); + } + } else { + g_strfreev(nameservers); + } + + if (compare_string_arrays(timeservers, dhcp->timeservers) == FALSE) { + if (dhcp->timeservers != NULL) { + for (i = 0; dhcp->timeservers[i] != NULL; i++) { + __connman_service_timeserver_remove(service, + dhcp->timeservers[i]); + } + g_strfreev(dhcp->timeservers); + } + + dhcp->timeservers = timeservers; + + for (i = 0; dhcp->timeservers != NULL && + dhcp->timeservers[i] != NULL; i++) { + __connman_service_timeserver_append(service, + dhcp->timeservers[i]); + } + } else { + g_strfreev(timeservers); + } + + if (g_strcmp0(pac, dhcp->pac) != 0) { + g_free(dhcp->pac); + dhcp->pac = pac; + + __connman_service_set_pac(service, dhcp->pac); + } + + __connman_service_set_domainname(service, domainname); + + if (domainname != NULL) + __connman_utsname_set_domainname(domainname); + + if (hostname != NULL) + __connman_utsname_set_hostname(hostname); + + if (ip_change == TRUE) + dhcp_valid(dhcp); + + __connman_6to4_probe(service); + + g_free(address); + g_free(netmask); + g_free(gateway); + g_free(domainname); + g_free(hostname); +} + +static void ipv4ll_available_cb(GDHCPClient *dhcp_client, gpointer user_data) +{ + struct connman_dhcp *dhcp = user_data; + char *address, *netmask; + struct connman_service *service; + struct connman_ipconfig *ipconfig; + unsigned char prefixlen; + + DBG("IPV4LL available"); + + service = __connman_service_lookup_from_network(dhcp->network); + if (service == NULL) + return; + + ipconfig = __connman_service_get_ip4config(service); + if (ipconfig == NULL) + return; + + address = g_dhcp_client_get_address(dhcp_client); + netmask = g_dhcp_client_get_netmask(dhcp_client); + + prefixlen = __connman_ipconfig_netmask_prefix_len(netmask); + + __connman_ipconfig_set_method(ipconfig, CONNMAN_IPCONFIG_METHOD_DHCP); + __connman_ipconfig_set_local(ipconfig, address); + __connman_ipconfig_set_prefixlen(ipconfig, prefixlen); + __connman_ipconfig_set_gateway(ipconfig, NULL); + + dhcp_valid(dhcp); + + g_free(address); + g_free(netmask); +} + +static void dhcp_debug(const char *str, void *data) +{ + connman_info("%s: %s\n", (const char *) data, str); +} + +static int dhcp_request(struct connman_dhcp *dhcp) +{ + struct connman_service *service; + struct connman_ipconfig *ipconfig; + GDHCPClient *dhcp_client; + GDHCPClientError error; + const char *hostname; + int index; + + DBG("dhcp %p", dhcp); + + index = connman_network_get_index(dhcp->network); + + dhcp_client = g_dhcp_client_new(G_DHCP_IPV4, index, &error); + if (error != G_DHCP_CLIENT_ERROR_NONE) + return -EINVAL; + + if (getenv("CONNMAN_DHCP_DEBUG")) + g_dhcp_client_set_debug(dhcp_client, dhcp_debug, "DHCP"); + + g_dhcp_client_set_id(dhcp_client); + + hostname = connman_utsname_get_hostname(); + if (hostname != NULL) + g_dhcp_client_set_send(dhcp_client, G_DHCP_HOST_NAME, hostname); + + g_dhcp_client_set_request(dhcp_client, G_DHCP_HOST_NAME); + g_dhcp_client_set_request(dhcp_client, G_DHCP_SUBNET); + g_dhcp_client_set_request(dhcp_client, G_DHCP_DNS_SERVER); + g_dhcp_client_set_request(dhcp_client, G_DHCP_DOMAIN_NAME); + g_dhcp_client_set_request(dhcp_client, G_DHCP_NTP_SERVER); + g_dhcp_client_set_request(dhcp_client, G_DHCP_ROUTER); + g_dhcp_client_set_request(dhcp_client, 252); + + g_dhcp_client_register_event(dhcp_client, + G_DHCP_CLIENT_EVENT_LEASE_AVAILABLE, + lease_available_cb, dhcp); + + g_dhcp_client_register_event(dhcp_client, + G_DHCP_CLIENT_EVENT_IPV4LL_AVAILABLE, + ipv4ll_available_cb, dhcp); + + g_dhcp_client_register_event(dhcp_client, + G_DHCP_CLIENT_EVENT_LEASE_LOST, lease_lost_cb, dhcp); + + g_dhcp_client_register_event(dhcp_client, + G_DHCP_CLIENT_EVENT_IPV4LL_LOST, ipv4ll_lost_cb, dhcp); + + g_dhcp_client_register_event(dhcp_client, + G_DHCP_CLIENT_EVENT_NO_LEASE, no_lease_cb, dhcp); + + dhcp->dhcp_client = dhcp_client; + + service = __connman_service_lookup_from_network(dhcp->network); + ipconfig = __connman_service_get_ip4config(service); + + return g_dhcp_client_start(dhcp_client, + __connman_ipconfig_get_dhcp_address(ipconfig)); +} + +static int dhcp_release(struct connman_dhcp *dhcp) +{ + DBG("dhcp %p", dhcp); + + if (dhcp->dhcp_client == NULL) + return 0; + + g_dhcp_client_stop(dhcp->dhcp_client); + g_dhcp_client_unref(dhcp->dhcp_client); + + dhcp->dhcp_client = NULL; + + return 0; +} + +static void remove_network(gpointer user_data) +{ + struct connman_dhcp *dhcp = user_data; + + DBG("dhcp %p", dhcp); + + dhcp_invalidate(dhcp, FALSE); + dhcp_release(dhcp); + + g_free(dhcp); +} + +int __connman_dhcp_start(struct connman_network *network, dhcp_cb callback) +{ + struct connman_dhcp *dhcp; + + DBG(""); + + dhcp = g_try_new0(struct connman_dhcp, 1); + if (dhcp == NULL) + return -ENOMEM; + + dhcp->network = network; + dhcp->callback = callback; + + connman_network_ref(network); + + g_hash_table_replace(network_table, network, dhcp); + + return dhcp_request(dhcp); +} + +void __connman_dhcp_stop(struct connman_network *network) +{ + DBG(""); + + if (network_table == NULL) + return; + + if (g_hash_table_remove(network_table, network) == TRUE) + connman_network_unref(network); +} + +int __connman_dhcp_init(void) +{ + DBG(""); + + network_table = g_hash_table_new_full(g_direct_hash, g_direct_equal, + NULL, remove_network); + + return 0; +} + +void __connman_dhcp_cleanup(void) +{ + DBG(""); + + g_hash_table_destroy(network_table); + network_table = NULL; }