X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=src%2Fdhcp.c;h=f4de736a5ab45ad56b92da888d5f892f6c7b7d03;hb=46d7e52dcabccff5e010a6aa7232fbbfea1abecb;hp=8b9a39b6c9d0024ed57ae6c09e032ce11a7c6f6a;hpb=4bd40079eea51f0a84a00d6330222364adf44710;p=framework%2Fconnectivity%2Fconnman.git diff --git a/src/dhcp.c b/src/dhcp.c index 8b9a39b..f4de736 100644 --- a/src/dhcp.c +++ b/src/dhcp.c @@ -2,7 +2,7 @@ * * Connection Manager * - * Copyright (C) 2007-2010 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 @@ -22,308 +22,503 @@ #ifdef HAVE_CONFIG_H #include #endif +#include +#include +#include +#include + +#include + +#include #include #include "connman.h" struct connman_dhcp { - gint refcount; - int index; - enum connman_dhcp_state state; + struct connman_network *network; + dhcp_cb callback; - struct connman_element *element; + char **nameservers; + char **timeservers; + char *pac; - struct connman_dhcp_driver *driver; - void *driver_data; + GDHCPClient *dhcp_client; }; -/** - * connman_dhcp_ref: - * @dhcp: DHCP structure - * - * Increase reference counter of DHCP - */ -struct connman_dhcp *connman_dhcp_ref(struct connman_dhcp *dhcp) +static GHashTable *network_table; + +static void dhcp_free(struct connman_dhcp *dhcp) { - g_atomic_int_inc(&dhcp->refcount); + g_strfreev(dhcp->nameservers); + g_strfreev(dhcp->timeservers); + g_free(dhcp->pac); - return dhcp; + dhcp->nameservers = NULL; + dhcp->timeservers = NULL; + dhcp->pac = NULL; } /** - * connman_dhcp_unref: - * @dhcp: DHCP structure + * 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. * - * Decrease reference counter of DHCP + * 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. */ -void connman_dhcp_unref(struct connman_dhcp *dhcp) +static void dhcp_invalidate(struct connman_dhcp *dhcp, connman_bool_t callback) { - if (g_atomic_int_dec_and_test(&dhcp->refcount) == TRUE) - g_free(dhcp); + 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); } -/** - * connman_dhcp_get_index: - * @dhcp: DHCP structure - * - * Get network index of DHCP - */ -int connman_dhcp_get_index(struct connman_dhcp *dhcp) +static void dhcp_valid(struct connman_dhcp *dhcp) { - return dhcp->index; + if (dhcp->callback != NULL) + dhcp->callback(dhcp->network, TRUE); } -/** - * connman_dhcp_get_interface: - * @dhcp: DHCP structure - * - * Get network interface of DHCP - */ -char *connman_dhcp_get_interface(struct connman_dhcp *dhcp) +static void no_lease_cb(GDHCPClient *dhcp_client, gpointer user_data) { - return connman_inet_ifname(dhcp->index); + struct connman_dhcp *dhcp = user_data; + + DBG("No lease available"); + + dhcp_invalidate(dhcp, TRUE); } -/** - * connman_dhcp_set_value: - * @dhcp: DHCP structure - * @key: unique identifier - * @value: string value - * - * Set string value for specific key - */ -void connman_dhcp_set_value(struct connman_dhcp *dhcp, - const char *key, const char *value) +static void lease_lost_cb(GDHCPClient *dhcp_client, gpointer user_data) { - if (g_strcmp0(key, "Address") == 0) { - g_free(dhcp->element->ipv4.address); - dhcp->element->ipv4.address = g_strdup(value); - } else if (g_strcmp0(key, "Netmask") == 0) { - g_free(dhcp->element->ipv4.netmask); - dhcp->element->ipv4.netmask = g_strdup(value); - } else if (g_strcmp0(key, "Gateway") == 0) { - g_free(dhcp->element->ipv4.gateway); - dhcp->element->ipv4.gateway = g_strdup(value); - } else if (g_strcmp0(key, "Network") == 0) { - g_free(dhcp->element->ipv4.network); - dhcp->element->ipv4.network = g_strdup(value); - } else if (g_strcmp0(key, "Broadcast") == 0) { - g_free(dhcp->element->ipv4.broadcast); - dhcp->element->ipv4.broadcast = g_strdup(value); - } else if (g_strcmp0(key, "Nameserver") == 0) { - g_free(dhcp->element->ipv4.nameserver); - dhcp->element->ipv4.nameserver = g_strdup(value); - } else if (g_strcmp0(key, "Domainname") == 0) { - __connman_utsname_set_domainname(value); - } else if (g_strcmp0(key, "Hostname") == 0) { - __connman_utsname_set_hostname(value); - } else if (g_strcmp0(key, "Timeserver") == 0) { - g_free(dhcp->element->ipv4.timeserver); - dhcp->element->ipv4.timeserver = g_strdup(value); - } else if (g_strcmp0(key, "MTU") == 0) { - } else if (g_strcmp0(key, "PAC") == 0) { - connman_info("PAC configuration %s", value); - - g_free(dhcp->element->ipv4.pac); - dhcp->element->ipv4.pac = g_strdup(value); - } + struct connman_dhcp *dhcp = user_data; + + DBG("Lease lost"); + + dhcp_invalidate(dhcp, TRUE); } -/** - * connman_dhcp_bound: - * @dhcp: DHCP structure - * - * Report successful bound of the interface - */ -void connman_dhcp_bound(struct connman_dhcp *dhcp) +static void ipv4ll_lost_cb(GDHCPClient *dhcp_client, gpointer user_data) { - struct connman_element *element; + struct connman_dhcp *dhcp = user_data; - DBG("dhcp %p", dhcp); + DBG("Lease lost"); - element = connman_element_create(NULL); - if (element == NULL) - return; + dhcp_invalidate(dhcp, TRUE); +} + + +static gboolean compare_string_arrays(char **array_a, char **array_b) +{ + int i; - element->type = CONNMAN_ELEMENT_TYPE_IPV4; - element->index = dhcp->index; + if (array_a == NULL || array_b == NULL) + return FALSE; - connman_element_update(dhcp->element); + if (g_strv_length(array_a) != g_strv_length(array_b)) + return FALSE; - if (connman_element_register(element, dhcp->element) < 0) - connman_element_unref(element); + 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 TRUE; } -/** - * connman_dhcp_renew: - * @dhcp: DHCP structure - * - * Report successful renew of the interface - */ -void connman_dhcp_renew(struct connman_dhcp *dhcp) +static void lease_available_cb(GDHCPClient *dhcp_client, gpointer user_data) { - DBG("dhcp %p", dhcp); + 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"); + + 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); + + 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; + } + + 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); - connman_element_update(dhcp->element); + g_free(address); + g_free(netmask); + g_free(gateway); + g_free(domainname); + g_free(hostname); } -/** - * connman_dhcp_fail: - * @dhcp: DHCP structure - * - * Report DHCP failure of the interface - */ -void connman_dhcp_fail(struct connman_dhcp *dhcp) +static void ipv4ll_available_cb(GDHCPClient *dhcp_client, gpointer user_data) { - DBG("dhcp %p", dhcp); + 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); - connman_element_set_error(dhcp->element, - CONNMAN_ELEMENT_ERROR_FAILED); + 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); } -/** - * connman_dhcp_get_data: - * @dhcp: DHCP structure - * - * Get private DHCP data pointer - */ -void *connman_dhcp_get_data(struct connman_dhcp *dhcp) +static void dhcp_debug(const char *str, void *data) { - return dhcp->driver_data; + connman_info("%s: %s\n", (const char *) data, str); } -/** - * connman_dhcp_set_data: - * @dhcp: DHCP structure - * @data: data pointer - * - * Set private DHCP data pointer - */ -void connman_dhcp_set_data(struct connman_dhcp *dhcp, void *data) +static int dhcp_request(struct connman_dhcp *dhcp) { - dhcp->driver_data = data; -} + struct connman_service *service; + struct connman_ipconfig *ipconfig; + GDHCPClient *dhcp_client; + GDHCPClientError error; + const char *hostname; + int index; -static GSList *driver_list = NULL; + DBG("dhcp %p", dhcp); -static gint compare_priority(gconstpointer a, gconstpointer b) -{ - const struct connman_dhcp_driver *driver1 = a; - const struct connman_dhcp_driver *driver2 = b; + 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); - return driver2->priority - driver1->priority; + 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)); } -/** - * connman_dhcp_driver_register: - * @driver: DHCP driver definition - * - * Register a new DHCP driver - * - * Returns: %0 on success - */ -int connman_dhcp_driver_register(struct connman_dhcp_driver *driver) +static int dhcp_release(struct connman_dhcp *dhcp) { - DBG("driver %p name %s", driver, driver->name); + 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); - driver_list = g_slist_insert_sorted(driver_list, driver, - compare_priority); + dhcp->dhcp_client = NULL; return 0; } -/** - * connman_dhcp_driver_unregister: - * @driver: DHCP driver definition - * - * Remove a previously registered DHCP driver - */ -void connman_dhcp_driver_unregister(struct connman_dhcp_driver *driver) +static void remove_network(gpointer user_data) { - DBG("driver %p name %s", driver, driver->name); + struct connman_dhcp *dhcp = user_data; + + DBG("dhcp %p", dhcp); - driver_list = g_slist_remove(driver_list, driver); + dhcp_invalidate(dhcp, FALSE); + dhcp_release(dhcp); + + g_free(dhcp); } -static int dhcp_probe(struct connman_element *element) +int __connman_dhcp_start(struct connman_network *network, dhcp_cb callback) { struct connman_dhcp *dhcp; - GSList *list; - DBG("element %p name %s", element, element->name); + DBG(""); dhcp = g_try_new0(struct connman_dhcp, 1); if (dhcp == NULL) return -ENOMEM; - dhcp->refcount = 1; - dhcp->index = element->index; - dhcp->state = CONNMAN_DHCP_STATE_IDLE; - - dhcp->element = element; + dhcp->network = network; + dhcp->callback = callback; - connman_element_set_data(element, dhcp); + connman_network_ref(network); - for (list = driver_list; list; list = list->next) { - struct connman_dhcp_driver *driver = list->data; + g_hash_table_replace(network_table, network, dhcp); - DBG("driver %p name %s", driver, driver->name); - - if (driver->request(dhcp) == 0) { - dhcp->driver = driver; - break; - } - } - - if (dhcp->driver == NULL) { - connman_dhcp_unref(dhcp); - return -ENOENT; - } - - return 0; + return dhcp_request(dhcp); } -static void dhcp_remove(struct connman_element *element) +void __connman_dhcp_stop(struct connman_network *network) { - struct connman_dhcp *dhcp = connman_element_get_data(element); - - DBG("element %p name %s", element, element->name); + DBG(""); - connman_element_set_data(element, NULL); - - if (dhcp->driver) { - dhcp->driver->release(dhcp); - dhcp->driver = NULL; - } + if (network_table == NULL) + return; - connman_dhcp_unref(dhcp); + if (g_hash_table_remove(network_table, network) == TRUE) + connman_network_unref(network); } -static void dhcp_change(struct connman_element *element) +int __connman_dhcp_init(void) { - DBG("element %p name %s", element, element->name); + DBG(""); - if (element->state == CONNMAN_ELEMENT_STATE_ERROR) - connman_element_set_error(element->parent, - CONNMAN_ELEMENT_ERROR_DHCP_FAILED); -} - -static struct connman_driver dhcp_driver = { - .name = "dhcp", - .type = CONNMAN_ELEMENT_TYPE_DHCP, - .priority = CONNMAN_DRIVER_PRIORITY_LOW, - .probe = dhcp_probe, - .remove = dhcp_remove, - .change = dhcp_change, -}; + network_table = g_hash_table_new_full(g_direct_hash, g_direct_equal, + NULL, remove_network); -int __connman_dhcp_init(void) -{ - return connman_driver_register(&dhcp_driver); + return 0; } void __connman_dhcp_cleanup(void) { - connman_driver_unregister(&dhcp_driver); + DBG(""); + + g_hash_table_destroy(network_table); + network_table = NULL; }