diff options
Diffstat (limited to 'src/rdisc/nm-rdisc.c')
| -rw-r--r-- | src/rdisc/nm-rdisc.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/src/rdisc/nm-rdisc.c b/src/rdisc/nm-rdisc.c new file mode 100644 index 000000000..1682924c2 --- /dev/null +++ b/src/rdisc/nm-rdisc.c @@ -0,0 +1,191 @@ +/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */ +/* nm-rdisc.c - Perform IPv6 router discovery + * + * 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, 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) 2013 Red Hat, Inc. + */ + +#include <stdlib.h> +#include <arpa/inet.h> + +#include "nm-rdisc.h" + +#include "nm-logging.h" +#include "nm-utils.h" + +#define debug(...) nm_log_dbg (LOGD_IP6, __VA_ARGS__) + +G_DEFINE_TYPE (NMRDisc, nm_rdisc, G_TYPE_OBJECT) + +enum { + CONFIG_CHANGED, + LAST_SIGNAL +}; + +static guint signals[LAST_SIGNAL] = { 0 }; + +/******************************************************************/ + +void +nm_rdisc_set_lladdr (NMRDisc *rdisc, const char *addr, size_t addrlen) +{ + if (rdisc->lladdr) + g_bytes_unref (rdisc->lladdr); + rdisc->lladdr = addr ? g_bytes_new (addr, addrlen) : NULL; +} + +void +nm_rdisc_start (NMRDisc *rdisc) +{ + NMRDiscClass *klass = NM_RDISC_GET_CLASS (rdisc); + + g_assert (klass->start); + + debug ("(%s): starting router discovery: %d", rdisc->ifname, rdisc->ifindex); + + if (klass->start) + klass->start (rdisc); +} + +#define CONFIG_MAP_MAX_STR 7 + +static void +config_map_to_string (NMRDiscConfigMap map, char *p) +{ + if (map & NM_RDISC_CONFIG_DHCP_LEVEL) + *p++ = 'd'; + if (map & NM_RDISC_CONFIG_GATEWAYS) + *p++ = 'G'; + if (map & NM_RDISC_CONFIG_ADDRESSES) + *p++ = 'A'; + if (map & NM_RDISC_CONFIG_ROUTES) + *p++ = 'R'; + if (map & NM_RDISC_CONFIG_DNS_SERVERS) + *p++ = 'S'; + if (map & NM_RDISC_CONFIG_DNS_DOMAINS) + *p++ = 'D'; + *p = '\0'; +} + +static const char * +dhcp_level_to_string (NMRDiscDHCPLevel dhcp_level) +{ + switch (dhcp_level) { + case NM_RDISC_DHCP_LEVEL_NONE: + return "none"; + case NM_RDISC_DHCP_LEVEL_OTHERCONF: + return "otherconf"; + case NM_RDISC_DHCP_LEVEL_MANAGED: + return "managed"; + default: + return "INVALID"; + } +} + +#define expiry(item) (item->timestamp + item->lifetime) + +static void +config_changed (NMRDisc *rdisc, NMRDiscConfigMap changed) +{ + int i; + char changedstr[CONFIG_MAP_MAX_STR]; + char addrstr[INET6_ADDRSTRLEN]; + + if (nm_logging_enabled (LOGL_DEBUG, LOGD_IP6)) { + config_map_to_string (changed, changedstr); + debug ("(%s): router discovery configuration changed [%s]:", rdisc->ifname, changedstr); + debug (" dhcp-level %s", dhcp_level_to_string (rdisc->dhcp_level)); + for (i = 0; i < rdisc->gateways->len; i++) { + NMRDiscGateway *gateway = &g_array_index (rdisc->gateways, NMRDiscGateway, i); + + inet_ntop (AF_INET6, &gateway->address, addrstr, sizeof (addrstr)); + debug (" gateway %s pref %d exp %u", addrstr, gateway->preference, expiry (gateway)); + } + for (i = 0; i < rdisc->addresses->len; i++) { + NMRDiscAddress *address = &g_array_index (rdisc->addresses, NMRDiscAddress, i); + + inet_ntop (AF_INET6, &address->address, addrstr, sizeof (addrstr)); + debug (" address %s exp %u", addrstr, expiry (address)); + } + for (i = 0; i < rdisc->routes->len; i++) { + NMRDiscRoute *route = &g_array_index (rdisc->routes, NMRDiscRoute, i); + + inet_ntop (AF_INET6, &route->network, addrstr, sizeof (addrstr)); + debug (" route %s/%d via %s pref %d exp %u", addrstr, route->plen, + nm_utils_inet6_ntop (&route->gateway, NULL), route->preference, + expiry (route)); + } + for (i = 0; i < rdisc->dns_servers->len; i++) { + NMRDiscDNSServer *dns_server = &g_array_index (rdisc->dns_servers, NMRDiscDNSServer, i); + + inet_ntop (AF_INET6, &dns_server->address, addrstr, sizeof (addrstr)); + debug (" dns_server %s exp %u", addrstr, expiry (dns_server)); + } + for (i = 0; i < rdisc->dns_domains->len; i++) { + NMRDiscDNSDomain *dns_domain = &g_array_index (rdisc->dns_domains, NMRDiscDNSDomain, i); + + debug (" dns_domain %s exp %u", dns_domain->domain, expiry (dns_domain)); + } + } +} + +/******************************************************************/ + +static void +nm_rdisc_init (NMRDisc *rdisc) +{ + rdisc->gateways = g_array_new (FALSE, FALSE, sizeof (NMRDiscGateway)); + rdisc->addresses = g_array_new (FALSE, FALSE, sizeof (NMRDiscAddress)); + rdisc->routes = g_array_new (FALSE, FALSE, sizeof (NMRDiscRoute)); + rdisc->dns_servers = g_array_new (FALSE, FALSE, sizeof (NMRDiscDNSServer)); + rdisc->dns_domains = g_array_new (FALSE, FALSE, sizeof (NMRDiscDNSDomain)); + rdisc->lladdr = NULL; + rdisc->hop_limit = 64; +} + +static void +nm_rdisc_finalize (GObject *object) +{ + NMRDisc *rdisc = NM_RDISC (object); + + g_free (rdisc->ifname); + g_array_unref (rdisc->gateways); + g_array_unref (rdisc->addresses); + g_array_unref (rdisc->routes); + g_array_unref (rdisc->dns_servers); + g_array_unref (rdisc->dns_domains); + + if (rdisc->lladdr) + g_bytes_unref (rdisc->lladdr); +} + +static void +nm_rdisc_class_init (NMRDiscClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + + object_class->finalize = nm_rdisc_finalize; + + klass->config_changed = config_changed; + + signals[CONFIG_CHANGED] = g_signal_new ( + NM_RDISC_CONFIG_CHANGED, + G_OBJECT_CLASS_TYPE (klass), + G_SIGNAL_RUN_FIRST, + G_STRUCT_OFFSET (NMRDiscClass, config_changed), + NULL, NULL, NULL, + G_TYPE_NONE, 1, G_TYPE_INT); +} |