void CDiscoveryApp::SetDefaulRoute(in_addr_t gw)
{
in_addr_t def_dest=inet_addr("0.0.0.0");
in_addr_t def_mask=inet_addr("0.0.0.0");
in_addr addr={0};
char szDevice [64];
switch( get_default_gateway( &addr.s_addr, szDevice, sizeof(szDevice) ) )
{
case DEFAULT_ETH_INTERF:
LOG("REPLACING DefaultGW [%s] on %s", inet_ntoa(addr), m_szEthInterf);
del_route(addr.s_addr);
set_route(def_dest, gw, def_mask);
break;
case DEFAULT_NOT_ETH_INTERF:
LOG("NOT REPLACING DefaultGW GW [%s] on %s", inet_ntoa(addr), szDevice );
break;
case DEFAULT_NOT_SET:
LOG("SETTING DefaultGW [%s] on %s", inet_ntoa(addr), m_szEthInterf);
set_route(def_dest, gw, def_mask);
break;
}
}
/*
* Delete/retain addresses to list and handle the route entries.
*/
void
install_address(struct preflist **plist, struct interface *ifp)
{
struct preflist *pl, **ppl, *temp;
/* DELETE FIRST */
for (pl = *plist, ppl = plist; pl;) {
temp = pl;
pl = pl->pl_next;
if (temp->pl_flag != PL_DELADDR) {
ppl = &(temp->pl_next);
continue;
} else {
*ppl = pl;
del_route(temp, ifp);
free(temp);
}
}
/* AND THEN ADD */
for (pl = *plist, ppl = plist; pl;) {
temp = pl;
pl = pl->pl_next;
if (temp->pl_flag == PL_NEWADDR) {
if (ifp->if_flag & IFF_UP && ifp->if_lladdr != NULL)
add_route(temp, ifp);
}
ppl = &(temp->pl_next);
}
return;
}
int del_tun_default_route_v6()
{
/*
* Assign route to ::/1 and 8000::/1 via tun interface
*/
lisp_addr_t dest;
lisp_addr_t *src = NULL;
lisp_addr_t gw;
uint32_t prefix_len = 0;
uint32_t metric = 0;
prefix_len = 1;
metric = 512;
get_lisp_addr_from_char("::",&gw);
get_lisp_addr_from_char("::",&dest);
if (del_route(AF_INET6,
tun_ifindex,
&dest,
src,
NULL,
prefix_len,
metric,
RT_TABLE_MAIN) != GOOD){
return (BAD);
}
get_lisp_addr_from_char("8000::",&dest);
if (del_route(AF_INET6,
tun_ifindex,
&dest,
src,
NULL,
prefix_len,
metric,
RT_TABLE_MAIN) != GOOD){
return (BAD);
}
return(GOOD);
}
int
ni_set_state(NET ifp, int opcode)
{
int err = 0;
if ((opcode != NI_DOWN) &&
(opcode != NI_UP))
{
return ENP_PARAM;
}
LOCK_NET_RESOURCE(NET_RESID);
if (opcode == NI_DOWN) /* clean up system tables */
{
#ifdef INCLUDE_TCP
if_killsocks(ifp); /* kill this iface's sockets */
#endif /* INCLUDE_TCP */
del_route(0, 0, if_netnumber(ifp)); /* delete any IP routes */
clear_arp_entries(NULLIP, ifp); /* delete any ARP entries */
}
/* force if-mib AdminStatus flag to correct setting. This will
* keep devices without n_setstate() calls from receiving any
* packet to send from ip2mac().
*/
if (opcode == NI_UP)
ifp->n_mib->ifAdminStatus = NI_UP;
else
ifp->n_mib->ifAdminStatus = NI_DOWN;
ifp->n_mib->ifLastChange = cticks * (100/TPS);
if (ifp->n_setstate) /* call state routine if any */
err = ifp->n_setstate(ifp, opcode);
else
err = 0; /* no routine == no error */
if(!err)
{
/* Get here if setstate was OK - set ifOperStatus */
if (opcode == NI_UP)
ifp->n_mib->ifOperStatus = NI_UP;
else
ifp->n_mib->ifOperStatus = NI_DOWN;
}
UNLOCK_NET_RESOURCE(NET_RESID);
return err;
}
/*
* Remove all the created rules to the source routing tables
*/
void remove_created_rules()
{
lispd_iface_list_elt *interface_list = NULL;
lispd_iface_elt *iface = NULL;
interface_list = head_interface_list;
while (interface_list != NULL){
iface = interface_list->iface;
if (iface->ipv4_address->afi != AF_UNSPEC){
if (iface->ipv4_gateway != NULL){
del_route(AF_INET,iface->iface_index,NULL,NULL,iface->ipv4_gateway,0,0,iface->iface_index);
}
del_rule(AF_INET,0,iface->iface_index,iface->iface_index,RTN_UNICAST,iface->ipv4_address,32,NULL,0,0);
}
if (iface->ipv6_address->afi != AF_UNSPEC){
if (iface->ipv6_gateway != NULL){
del_route(AF_INET6,iface->iface_index,NULL,NULL,iface->ipv6_gateway,0,0,iface->iface_index);
}
del_rule(AF_INET6,0,iface->iface_index,iface->iface_index,RTN_UNICAST,iface->ipv6_address,128,NULL,0,0);
}
interface_list = interface_list->next;
}
}
/* FUNCTION: netmain_route_del()
*
* Delete IP route table entry
*
* PARAM1: CLI_CTX CLI context
*
* RETURNS: int 0 or error code
*/
STATIC int
netmain_route_del(CLI_CTX ctx)
{
struct cli_addr *cap;
ip_addr dst;
ip_addr mask;
int ifindex;
int rc;
/* extract the destination IP address */
cap = (struct cli_addr *)CLI_VALUE(ctx, 'd');
if (cap->type == CLI_IPV4)
{
dst = *((ip_addr *)&cap->addr[0]);
}
else
{
/* failed to parse destination IP address */
return (CLI_ERR_PARAM);
}
/* extract the address mask */
cap = (struct cli_addr *)CLI_VALUE(ctx, 'm');
if (cap->type == CLI_IPV4)
{
mask = *((ip_addr *)&cap->addr[0]);
}
else
{
/* failed to parse address mask */
return (CLI_ERR_PARAM);
}
/* extract the interface identifier (zero-based) */
ifindex = (int)CLI_VALUE(ctx, 'i') - 1;
if ((ifindex < 0) || (ifindex >= MAXNETS) ||
(if_getbynum(ifindex) == (NET)NULL))
{
/* bad interface index */
return (CLI_ERR_PARAM);
}
/* del_route() returns the number of routes deleted */
rc = del_route(dst, mask, ifindex);
return ((rc > 0) ? 0 : CLI_ERR_EXECUTE);
}
void proxy_instance::refresh_all_traffic(int if_index, const addr_storage& g_addr){
HC_LOG_TRACE("");
upstream_src_state_map::iterator iter_uss;
src_state_map::iterator iter_src;
state_table_map::iterator iter_table;
g_state_map::iterator iter_state;
src_group_state_pair* sgs_pair = 0;
if(if_index == m_upstream){
HC_LOG_ERROR("the if_index:" << if_index << " mussnt be the upstream, upstream have no joined groups");
}
//process upstream
iter_uss = m_upstream_state.find(g_addr);
if(iter_uss != m_upstream_state.end()){ //g_addr found
for(iter_src = iter_uss->second.begin(); iter_src != iter_uss->second.end(); iter_src++){
if(!split_traffic(m_upstream, g_addr, iter_src->first)){
//have to check old upstream source because the have no default stream so they dont refresh themselve like downstreams
iter_src->second.flag = src_state::UNUSED_SRC;
del_route(if_index,g_addr,iter_src->first);
}
}
}
//process downstream
for(iter_table = m_state_table.begin(); iter_table != m_state_table.end(); iter_table++){
if(if_index != iter_table->first){
iter_state = iter_table->second.find(g_addr);
if(iter_state != iter_table->second.end()){
sgs_pair = &iter_state->second;
for(iter_src = sgs_pair->first.begin(); iter_src != sgs_pair->first.end(); iter_src++){
split_traffic(iter_table->first, g_addr, iter_src->first);
}
}
}
}
}
int main( int argc, char **argv )
{
uint8 anAddress[4];
uint8 anMask[4];
uint8 anGateway[4] = { 0, 0, 0, 0 };
const char *pzGateway = NULL, *pzProgram;
const char *pzCommand, *pzNetAddr, *pzNetMask;
struct rtentry sRoute;
bool bLong = false;
bool bNetSet = false, bMaskSet = false, bGwSet = false;
int c;
if ( (pzProgram = strrchr( *argv, '/' )) != NULL )
++pzProgram;
else
pzProgram = *argv;
memset( &sRoute, 0, sizeof( sRoute ) );
sRoute.rt_metric = 0;
sRoute.rt_flags = RTF_UP | RTF_STATIC; /* Not necessary */
while ( ( c = getopt_long( argc, argv, "hlqvi:g:", long_opts, ( int * )0 ) ) != EOF )
{
switch ( c )
{
case 0:
break;
case 'l':
bLong = true;
break;
case 'v':
g_nShowVersion = true;
break;
case 'h':
g_nShowHelp = true;
break;
default:
usage( pzProgram, 0 );
return ( EXIT_FAILURE );
}
}
argc -= optind;
argv += optind;
if ( (pzCommand = *argv++) == NULL )
{
usage( pzProgram, 0 );
return ( EXIT_FAILURE );
}
/* Check command is valid */
if ( strcmp( pzCommand, "list" ) == 0 )
{
list_routes( bLong );
return ( EXIT_SUCCESS );
}
else if ( strcmp( pzCommand, "add" ) != 0 && strcmp( pzCommand, "del" ) != 0 )
{
usage( pzProgram, 0 );
return ( EXIT_FAILURE );
}
/* Add or delete a route */
/* Look for address parameter */
while ( *argv )
{
const char *pzInstruction = *argv++;
char *pzArg = *argv++;
if ( pzArg == NULL )
{
/* No argument */
usage( pzProgram, 0 );
return ( EXIT_FAILURE );
}
if ( strcmp( pzInstruction, "net" ) == 0 )
{
char *pzStr;
if( bNetSet == true )
{
usage( pzProgram, 0 );
return ( EXIT_FAILURE );
}
if( strcmp( pzArg, "default" ) == 0 )
{
bNetSet = true;
bMaskSet = true;
}
else
{
if( (pzStr = strchr( pzArg, '/' )) != NULL )
{
/* CIDR notation in address parameter */
int nBits;
uint32 nIpAddr = 0xFFFFFFFF;
*pzStr++ = 0;
if( (nBits = atoi( pzStr )) < 32 )
nIpAddr <<= (32 - nBits);
*((uint32 *)&((struct sockaddr_in *)&sRoute.rt_genmask)->sin_addr) = htonl( nIpAddr );
bMaskSet = true;
}
/* Interpret as IP address */
parse_ipaddress( (uint8*)&((struct sockaddr_in *)&sRoute.rt_dst)->sin_addr, pzArg );
bNetSet = true;
}
}
else if ( strcmp( pzInstruction, "mask" ) == 0 )
{
if( bMaskSet == true )
{
usage( pzProgram, 0 );
return ( EXIT_FAILURE );
}
parse_ipaddress( (uint8*)&((struct sockaddr_in *)&sRoute.rt_genmask)->sin_addr, pzArg );
bMaskSet = true;
}
else if ( strcmp( pzInstruction, "gw" ) == 0 )
{
if( bGwSet == true )
{
usage( pzProgram, 0 );
return ( EXIT_FAILURE );
}
parse_ipaddress( (uint8*)&((struct sockaddr_in *)&sRoute.rt_gateway)->sin_addr, pzArg );
sRoute.rt_flags |= RTF_GATEWAY;
bGwSet = true;
}
else
{
usage( pzProgram, 0 );
return ( EXIT_FAILURE );
}
}
/* Check for required arguments */
if( !bNetSet || !bMaskSet )
{
usage( pzProgram, 0 );
return ( EXIT_FAILURE );
}
/* Perform action */
if ( strcmp( pzCommand, "add" ) == 0 )
{
add_route( &sRoute );
}
else if ( strcmp( pzCommand, "del" ) == 0 )
{
del_route( &sRoute );
}
return ( EXIT_SUCCESS );
}
void proxy_instance::handle_config(struct config_msg* c){
HC_LOG_TRACE("");
switch(c->type){
case config_msg::ADD_DOWNSTREAM: {
//if interface exist
if(m_state_table.find(c->if_index) != m_state_table.end()){
HC_LOG_ERROR("failed to add downstream, interface " << c->if_index << " allready exist");
}
m_state_table.insert(state_tabel_pair(c->if_index,g_state_map()));
m_vif_map.insert(vif_pair(c->if_index,c->vif));
registrate_if(c->if_index);
break;
}
case config_msg::DEL_DOWNSTREAM: {
//if interface exist
if(m_state_table.find(c->if_index) == m_state_table.end()){
HC_LOG_ERROR("failed to del downstream, interface " << c->if_index << " not exist");
}
unregistrate_if(c->if_index);
state_table_map::iterator iter_table;
g_state_map::iterator iter_state;
src_group_state_pair* sgs_pair = NULL;
src_state_map::iterator iter_src;
iter_table =m_state_table.find(c->if_index);
if(iter_table == m_state_table.end()) {
HC_LOG_ERROR("faild to del downstream: cant find if_index: " << c->if_index);
return;
}
vector<addr_storage> tmp_erase_group_vector;
for(iter_state= iter_table->second.begin(); iter_state != iter_table->second.end(); iter_state++){
sgs_pair = &iter_state->second;
//remove all own sources (routes)
for(iter_src = sgs_pair->first.begin(); iter_src != sgs_pair->first.end(); iter_src++){
if(iter_src->second.flag == src_state::CACHED_SRC){
del_route(iter_table->first, iter_state->first, iter_src->first);
}
}
//save all groups for remove
tmp_erase_group_vector.push_back(iter_state->first);
//refresh upstream
if(!is_group_joined(c->if_index,iter_state->first)){
if(!m_sender->send_leave(m_upstream, iter_state->first)){
HC_LOG_ERROR("failed to leave on upstream group: " << iter_state->first);
}
}
}
//erase all groups
for(unsigned int i=0; i< tmp_erase_group_vector.size(); i++){
if((iter_state = iter_table->second.find(tmp_erase_group_vector[i]))!= iter_table->second.end()){
iter_table->second.erase(iter_state);
//calculate the joined group roles
refresh_all_traffic(c->if_index, tmp_erase_group_vector[i]);
}else{
HC_LOG_ERROR("cant find downstream group: " << tmp_erase_group_vector[i]);}
}
//clean state table
m_state_table.erase(iter_table);
//clean vif map
vif_map::iterator it_vif_map = m_vif_map.find(c->if_index);
if(it_vif_map == m_vif_map.end()) {
HC_LOG_ERROR("faild to del downstream: cant find vif to if_index: " << c->if_index);
return;
}
m_vif_map.erase(it_vif_map);
//HC_LOG_ERROR("del downstream not implementeted");
break;
}
case config_msg::SET_UPSTREAM: {
//remove current upstream
unregistrate_if(c->if_index);
vif_map::iterator it_vif_map = m_vif_map.find(c->if_index);
if(it_vif_map == m_vif_map.end()) {
HC_LOG_ERROR("faild to del downstream: cant find if_index: " << c->if_index);
return;
}
m_vif_map.erase(it_vif_map);
//ToDo
//refresh routes?????????????????????????????????
HC_LOG_ERROR("set upstream not implementeted");
//set new upstream
m_upstream = c->if_index;
m_vif_map.insert(vif_pair(c->if_index,c->vif));
registrate_if(c->if_index);
break;
}
default: HC_LOG_ERROR("unknown config message format");
}
}
void proxy_instance::handle_clock(struct clock_msg* c){
HC_LOG_TRACE("");
proxy_msg msg;
state_table_map::iterator iter_table;
g_state_map::iterator iter_state;
src_state_map::iterator iter_src;
src_group_state_pair* sgs_pair = NULL;
switch(c->type){
case clock_msg::SEND_GQ_TO_ALL: {
//send GQ
send_gq_to_all();
m_check_source.check(); //reloade routing table
//##-- dekrement all counter of all groups on all downstream interfaces in RUNNING state --##
//##-- and dekrement all counter of all groups source addresses --##
vector<addr_storage> tmp_erase_group_vector; //if group not joined and all sources are deleted
for(iter_table= m_state_table.begin(); iter_table != m_state_table.end(); iter_table++){
for(iter_state= iter_table->second.begin(); iter_state != iter_table->second.end(); iter_state++){
sgs_pair = &iter_state->second;
//-- process groups in RUNNING state --
if( sgs_pair->second.flag == src_state::RUNNING){
//if counter == 0 delete this group after query response
if(--sgs_pair->second.robustness_counter == 0){
sgs_pair->second.flag= src_state::WAIT_FOR_DEL;
sgs_pair->second.robustness_counter = PROXY_INSTANCE_DEL_IMMEDIATELY;
msg.type = proxy_msg::CLOCK_MSG;
msg.msg = new struct clock_msg(clock_msg::DEL_GROUP, iter_table->first, iter_state->first);
m_timing->add_time(MC_TV_QUERY_RESPONSE_INTERVAL*1000 /*msec*/,this,msg);
}
}
//-- process sources in FOREIGN_SRC state -downstream- --
vector<addr_storage> tmp_erase_source_vector;
for(iter_src = sgs_pair->first.begin(); iter_src != sgs_pair->first.end(); iter_src++){
if(iter_src->second.flag == src_state::UNUSED_SRC || iter_src->second.flag == src_state::CACHED_SRC){
//del unused sources
vif_map::iterator it_vif_map;
if((it_vif_map = m_vif_map.find(iter_table->first)) == m_vif_map.end()){
HC_LOG_ERROR("cant find vif to if_index:" << iter_table->first);
}
if(m_check_source.is_src_unused(it_vif_map->second, iter_src->first, iter_state->first)){
iter_src->second.robustness_counter--;
}else{
iter_src->second.robustness_counter=MC_TV_ROBUSTNESS_VARIABLE;
}
if(iter_src->second.robustness_counter == 0){
//save invalid sources
tmp_erase_source_vector.push_back(iter_src->first);
//refresh routing
if(iter_src->second.flag == src_state::CACHED_SRC){
del_route(iter_table->first, iter_state->first, iter_src->first);
}
}
}else{
HC_LOG_ERROR("downstream source is in unknown state: " << iter_src->second.state_type_to_string());
}
}
//erase invalid sources
for(unsigned int i=0; i< tmp_erase_source_vector.size(); i++){
if((iter_src = sgs_pair->first.find(tmp_erase_source_vector[i]))!= sgs_pair->first.end()){
sgs_pair->first.erase(iter_src);
}else{
HC_LOG_ERROR("cant find invalid downstream soruce: " << tmp_erase_source_vector[i]);
}
}
//if group has no sources and is not joined (flag=INIT) remove the group
if(sgs_pair->first.size() == 0){
if(sgs_pair->second.flag == src_state::INIT){
tmp_erase_group_vector.push_back(iter_state->first);
}
}
}
//erase unused groups
for(unsigned int i=0; i< tmp_erase_group_vector.size(); i++){
if((iter_state = iter_table->second.find(tmp_erase_group_vector[i]))!= iter_table->second.end()){
iter_table->second.erase(iter_state);
}else{
HC_LOG_ERROR("cant find unused groups: " << tmp_erase_group_vector[i]);
}
}
tmp_erase_group_vector.clear();
}
//-- process sources in FOREIGN_SRC state -upstream- --
upstream_src_state_map::iterator tmp_it_up_ss_map;
src_state_map* tmp_ss_map;
tmp_erase_group_vector.clear(); //unused groups
for(tmp_it_up_ss_map = m_upstream_state.begin(); tmp_it_up_ss_map != m_upstream_state.end(); tmp_it_up_ss_map++){
tmp_ss_map = &tmp_it_up_ss_map->second;
vector<addr_storage> tmp_erase_source_vector;
for(iter_src = tmp_ss_map->begin(); iter_src != tmp_ss_map->end(); iter_src++){
// if(iter_src->second.flag == src_state::UNUSED_SRC || iter_src->second.flag == src_state::CACHED_SRC){
// //del old sources
// if(--iter_src->second.robustness_counter == 0){
// //save invalid sources
// tmp_erase_source_vector.push_back(iter_src->first);
// //refresh routing
// if(iter_src->second.flag == src_state::CACHED_SRC){
// del_route(m_upstream, tmp_it_up_ss_map->first, iter_src->first);
// }
// }
// }else{
// HC_LOG_ERROR("upstream source is in unknown state: " << iter_src->second.state_type_to_string());
// }
if(iter_src->second.flag == src_state::UNUSED_SRC){
//del old sources
if(--iter_src->second.robustness_counter == 0){
//save invalid sources
tmp_erase_source_vector.push_back(iter_src->first);
}
}else if(iter_src->second.flag == src_state::CACHED_SRC){
if(m_check_source.is_src_unused(m_upstream, iter_src->first, tmp_it_up_ss_map->first)){
if(--iter_src->second.robustness_counter == 0){
//save invalid sources
tmp_erase_source_vector.push_back(iter_src->first);
del_route(m_upstream, tmp_it_up_ss_map->first, iter_src->first);
}
}else{
iter_src->second.robustness_counter=MC_TV_ROBUSTNESS_VARIABLE;
}
}else{
HC_LOG_ERROR("upstream source is in unknown state: " << iter_src->second.state_type_to_string());
}
}
//erase invalid sources
for(unsigned int i=0; i< tmp_erase_source_vector.size(); i++){
if((iter_src = tmp_ss_map->find(tmp_erase_source_vector[i])) != tmp_ss_map->end()){
tmp_ss_map->erase(iter_src);
}else{
HC_LOG_ERROR("cant find invalid upstream soruce: " << tmp_erase_source_vector[i]);
}
}
//if group has no sources remove the group
if(tmp_it_up_ss_map->second.size() == 0){
tmp_erase_group_vector.push_back(tmp_it_up_ss_map->first);
}
}
//erase unused groups
for(unsigned int i=0; i < tmp_erase_group_vector.size(); i++){
tmp_it_up_ss_map = m_upstream_state.find(tmp_erase_group_vector[i]);
if(tmp_it_up_ss_map != m_upstream_state.end()){
m_upstream_state.erase(tmp_it_up_ss_map);
}else{
HC_LOG_ERROR("cant find unused groups: " << tmp_erase_group_vector[i]);
}
}
//initiate new GQ
msg.type = proxy_msg::CLOCK_MSG;
msg.msg = new struct clock_msg(clock_msg::SEND_GQ_TO_ALL);
m_timing->add_time(MC_TV_QUERY_INTERVAL*1000 /*msec*/,this,msg);
break;
}
case clock_msg::SEND_GSQ: {
iter_table =m_state_table.find(c->if_index);
if(iter_table == m_state_table.end()) return;
iter_state = iter_table->second.find(c->g_addr);
if(iter_state == iter_table->second.end()) return;
sgs_pair = &iter_state->second;
if(sgs_pair->second.flag == src_state::RESPONSE_STATE){
m_sender->send_group_specific_query(c->if_index,c->g_addr);
if(--sgs_pair->second.robustness_counter == PROXY_INSTANCE_DEL_IMMEDIATELY){
sgs_pair->second.flag = src_state::WAIT_FOR_DEL;
msg.type = proxy_msg::CLOCK_MSG;
msg.msg = new struct clock_msg(clock_msg::DEL_GROUP, iter_table->first, iter_state->first);
if(m_addr_family == AF_INET){
m_timing->add_time(MC_TV_LAST_MEMBER_QUERY_INTEVAL*1000 /*msec*/,this,msg);
}else if(m_addr_family == AF_INET6){
m_timing->add_time(MC_TV_LAST_LISTENER_QUERY_INTERVAL*1000 /*msec*/,this,msg);
}else{
HC_LOG_ERROR("wrong addr_family: " << m_addr_family);
return;
}
}else{
msg.type = proxy_msg::CLOCK_MSG;
msg.msg = new struct clock_msg(clock_msg::SEND_GSQ, iter_table->first, iter_state->first);
if(m_addr_family == AF_INET){
m_timing->add_time(MC_TV_LAST_MEMBER_QUERY_INTEVAL*1000 /*msec*/,this,msg);
}else if(m_addr_family== AF_INET6){
m_timing->add_time(MC_TV_LAST_LISTENER_QUERY_INTERVAL*1000 /*msec*/,this,msg);
}else{
HC_LOG_ERROR("wrong addr_family: " << m_addr_family);
return;
}
}
}
break;
}
case clock_msg::DEL_GROUP:{
iter_table =m_state_table.find(c->if_index);
if(iter_table == m_state_table.end()) return;
iter_state = iter_table->second.find(c->g_addr);
if(iter_state == iter_table->second.end()) return;
sgs_pair = &iter_state->second;
if(sgs_pair->second.flag == src_state::WAIT_FOR_DEL){
HC_LOG_DEBUG("DEL_GROUP if_index: " << c->if_index << " group: " << c->g_addr);
//refresh upstream
if(!is_group_joined(c->if_index,c->g_addr)){
if(!m_sender->send_leave(m_upstream, c->g_addr)){
HC_LOG_ERROR("failed to leave on upstream group: " << c->g_addr);
}
}
//del only if no FOREIGN_SRC available
if(sgs_pair->first.size() == 0){
iter_table->second.erase(iter_state);
}else{ //set groupstate to INIT
sgs_pair->second.flag = src_state::INIT;
}
//refresh routing
//cout << "in del group: refresh_all_traffic()..." << endl;
refresh_all_traffic(c->if_index, c->g_addr);
}
break;
}
case clock_msg::SEND_GQ: break; //start up Query Interval vor new interfaces
default: HC_LOG_ERROR("unknown clock message foramt");
}
}
int configure (const options_t *options, interface_t *iface,
const dhcp_t *dhcp)
{
route_t *route = NULL;
route_t *new_route = NULL;
route_t *old_route = NULL;
struct hostent *he = NULL;
char newhostname[HOSTNAME_MAX_LEN] = {0};
char curhostname[HOSTNAME_MAX_LEN] = {0};
char *dname = NULL;
int dnamel = 0;
if (! options || ! iface || ! dhcp)
return -1;
/* Remove old routes
Always do this as the interface may have >1 address not added by us
so the routes we added may still exist */
if (iface->previous_routes)
{
for (route = iface->previous_routes; route; route = route->next)
if (route->destination.s_addr || options->dogateway)
{
int have = 0;
if (dhcp->address.s_addr != 0)
for (new_route = dhcp->routes; new_route; new_route = new_route->next)
if (new_route->destination.s_addr == route->destination.s_addr
&& new_route->netmask.s_addr == route->netmask.s_addr
&& new_route->gateway.s_addr == route->gateway.s_addr)
{
have = 1;
break;
}
if (! have)
del_route (iface->name, route->destination, route->netmask,
route->gateway, options->metric);
}
}
/* If we don't have an address, then return */
if (dhcp->address.s_addr == 0)
{
if (iface->previous_routes)
{
free_route (iface->previous_routes);
iface->previous_routes = NULL;
}
/* Only reset things if we had set them before */
if (iface->previous_address.s_addr != 0)
{
del_address (iface->name, iface->previous_address,
iface->previous_netmask);
memset (&iface->previous_address, 0, sizeof (struct in_addr));
memset (&iface->previous_netmask, 0, sizeof (struct in_addr));
restore_resolv (iface->name);
/* we currently don't have a resolvconf style programs for ntp/nis */
exec_script (options->script, iface->infofile, "down");
}
return 0;
}
if (add_address (iface->name, dhcp->address, dhcp->netmask,
dhcp->broadcast) < 0 && errno != EEXIST)
return -1;
/* Now delete the old address if different */
if (iface->previous_address.s_addr != dhcp->address.s_addr
&& iface->previous_address.s_addr != 0)
del_address (iface->name, iface->previous_address, iface->previous_netmask);
#ifdef __linux__
/* On linux, we need to change the subnet route to have our metric. */
if (iface->previous_address.s_addr != dhcp->address.s_addr
&& options->metric > 0 && dhcp->netmask.s_addr != INADDR_BROADCAST)
{
struct in_addr td;
struct in_addr tg;
memset (&td, 0, sizeof (td));
memset (&tg, 0, sizeof (tg));
td.s_addr = dhcp->address.s_addr & dhcp->netmask.s_addr;
add_route (iface->name, td, dhcp->netmask, tg, options->metric);
del_route (iface->name, td, dhcp->netmask, tg, 0);
}
#endif
/* Remember added routes */
if (dhcp->routes)
{
route_t *new_routes = NULL;
int remember;
for (route = dhcp->routes; route; route = route->next)
{
/* Don't set default routes if not asked to */
if (route->destination.s_addr == 0 && route->netmask.s_addr == 0
&& ! options->dogateway)
continue;
remember = add_route (iface->name, route->destination,
route->netmask, route->gateway,
options->metric);
/* If we failed to add the route, we may have already added it
ourselves. If so, remember it again. */
if (remember < 0)
for (old_route = iface->previous_routes; old_route;
old_route = old_route->next)
if (old_route->destination.s_addr == route->destination.s_addr
&& old_route->netmask.s_addr == route->netmask.s_addr
&& old_route->gateway.s_addr == route->gateway.s_addr)
{
remember = 1;
break;
}
if (remember >= 0)
{
if (! new_routes)
{
new_routes = xmalloc (sizeof (route_t));
memset (new_routes, 0, sizeof (route_t));
new_route = new_routes;
}
else
{
new_route->next = xmalloc (sizeof (route_t));
new_route = new_route->next;
}
memcpy (new_route, route, sizeof (route_t));
new_route -> next = NULL;
}
}
if (iface->previous_routes)
free_route (iface->previous_routes);
iface->previous_routes = new_routes;
}
if (options->dodns && dhcp->dnsservers)
make_resolv(iface->name, dhcp);
else
logger (LOG_DEBUG, "no dns information to write");
if (options->dontp && dhcp->ntpservers)
make_ntp(iface->name, dhcp);
if (options->donis && (dhcp->nisservers || dhcp->nisdomain))
make_nis(iface->name, dhcp);
/* Now we have made a resolv.conf we can obtain a hostname if we need one */
if (options->dohostname && ! dhcp->hostname)
{
he = gethostbyaddr (inet_ntoa (dhcp->address),
sizeof (struct in_addr), AF_INET);
if (he)
{
dname = he->h_name;
while (*dname > 32)
dname++;
dnamel = dname - he->h_name;
memcpy (newhostname, he->h_name, dnamel);
newhostname[dnamel] = 0;
}
}
gethostname (curhostname, sizeof (curhostname));
if (options->dohostname
|| strlen (curhostname) == 0
|| strcmp (curhostname, "(none)") == 0
|| strcmp (curhostname, "localhost") == 0)
{
if (dhcp->hostname)
strcpy (newhostname, dhcp->hostname);
if (*newhostname)
{
logger (LOG_INFO, "setting hostname to `%s'", newhostname);
sethostname (newhostname, strlen (newhostname));
}
}
write_info (iface, dhcp, options);
if (iface->previous_address.s_addr != dhcp->address.s_addr ||
iface->previous_netmask.s_addr != dhcp->netmask.s_addr)
{
memcpy (&iface->previous_address,
&dhcp->address, sizeof (struct in_addr));
memcpy (&iface->previous_netmask,
&dhcp->netmask, sizeof (struct in_addr));
exec_script (options->script, iface->infofile, "new");
}
else
exec_script (options->script, iface->infofile, "up");
return 0;
}
int Handle_Update(unsigned short bgp_len) {
//unsigned char *buf;
unsigned char buf[1000];
u_int16_t *wr_len_p;
u_int16_t wr_len;
u_int16_t *pa_len_p;
u_int16_t pa_len;
u_int16_t nlri_len;
u_int8_t *prefix_bits;
unsigned int prefix_bytes;
unsigned int pb;
u_int32_t prefix;
unsigned char *prefix_start;
int shift;
int n;
unsigned int i;
// make sure the length we were sent isn't outrageous long
if (bgp_len > 1000) {
// if (debug) fprintf(stderr,"Outrageous update length: %d\n", bgp_len);
bgp_send_notification(BGP_NOTIFY_MAJOR_MSG, BGP_NOTIFY_MINOR_MSG_LEN);
return(-1);
}
// but, make sure the length is long enough to contain the minimum update data
// bgp header plus 2 bytes for the withdrawn routes length field and 2 bytes for the path attribute length field
if (bgp_len < BGP_UPDATE_MIN_SIZE) {
// if (debug) fprintf(stderr,"Too small update length: %d\n", bgp_len);
bgp_send_notification(BGP_NOTIFY_MAJOR_MSG, BGP_NOTIFY_MINOR_MSG_LEN);
return(-1);
}
// alloc memory to hold the bgp update message
// if ((buf = (unsigned char *)calloc(1, bgp_len-BGP_SIZE)) == NULL) {
// // not good...
// if (debug) fprintf(stderr, "Shit...calloc failed\n");
// bgp_send_notification(BGP_NOTIFY_MAJOR_CEASE, BGP_NOTIFY_MINOR_CEASE_ADDOWN);
// }
// read in the rest of the bgp update message
if ((n = read(STDIN_FILENO, buf, bgp_len-BGP_SIZE)) != bgp_len-BGP_SIZE) {
// invalid size
// if (debug) fprintf(stderr,"Update read failed: %d of %d\n", n, bgp_len);
bgp_send_notification(BGP_NOTIFY_MAJOR_MSG, BGP_NOTIFY_MINOR_MSG_LEN);
return(-1);
}
//
// start parsing the update message
//
// first get the withdrawn routes length
wr_len_p = (u_int16_t *)buf;
wr_len = ntohs(*wr_len_p);
// make sure the indicated length matches up with the packet length we've received
if (bgp_len < BGP_UPDATE_MIN_SIZE + wr_len) {
// invalid size
// if (debug) fprintf(stderr,"Withdrawn routes length not valid: %d\n", wr_len);
bgp_send_notification(BGP_NOTIFY_MAJOR_MSG, BGP_NOTIFY_MINOR_MSG_LEN);
return(-1);
}
// next, get the total path attribute length
//pa_len_p = (u_int16_t *)(buf+2+*wr_len_p);
pa_len_p = (u_int16_t *)(buf+2+wr_len);
pa_len = ntohs(*pa_len_p);
// make sure the indicated length matches up with the packet length we've received
if (bgp_len < BGP_UPDATE_MIN_SIZE + wr_len + pa_len) {
// invalid size
// if (debug) fprintf(stderr,"bgp_len (%d) != 2 + wr_len (%d) + pa_len (%d)\n", bgp_len, wr_len, pa_len);
bgp_send_notification(BGP_NOTIFY_MAJOR_MSG, BGP_NOTIFY_MINOR_MSG_LEN);
return(-1);
}
// finally, figure out the NLRI length
nlri_len = bgp_len - BGP_UPDATE_MIN_SIZE - wr_len - pa_len;
// if (debug) fprintf(stderr,"nlri_len %d\n", nlri_len);
// at this point, we know the lengths of the various update message sections
// so, start parsing each section
//
// first, parse the withdrawn routes
//
i = 0;
while (i < wr_len) {
// get the length of the prefix in bits
// offset from beginning of buf = length of withdrawn routes length field + i
// new check that sizeof works like we want here
prefix_bits = (u_int8_t *)(buf + sizeof(wr_len_p) + i);
// make sure prefix_bits are valid
if (*prefix_bits > 32) {
bgp_send_notification(BGP_NOTIFY_MAJOR_UPDATE, BGP_NOTIFY_MINOR_UPDATE_BADATTR);
return(-1);
}
// round up to the octet boundry
if (*prefix_bits % 8 == 0) {
prefix_bytes = (int)(*prefix_bits/8);
} else {
prefix_bytes = (int)((*prefix_bits/8)+1);
}
// make sure the prefix length we're told isn't more than the
// remaining size of the withdrawn routes field
// i + prefix length byte + prefix length
if (i+sizeof(prefix_bits)+prefix_bytes > wr_len) {
bgp_send_notification(BGP_NOTIFY_MAJOR_MSG, BGP_NOTIFY_MINOR_MSG_LEN);
return(-1);
}
// looks ok, so parse the prefix
prefix = 0;
shift = 24;
prefix_start = (unsigned char *)(buf + sizeof(wr_len_p) + i + sizeof(prefix_bits));
pb = prefix_bytes;
while (pb--) {
prefix = prefix | ((*prefix_start)<<shift);
shift -= 8;
prefix_start += 1;
}
// remove this prefix from our routing table for this client
// if (debug) fprintf(stderr,"Removing prefix %08x from routing table\n", prefix);
del_route(ntohl(prefix), *prefix_bits);
// move on to the next prefix
//i += sizeof(prefix_bits)+prefix_bytes;
i += 1+prefix_bytes;
}
// if (debug) fprintf(stderr,"Done parsing withdrawn routes\n");
//
// next, parse the path attributes
//
if (pa_len == 0) {
// nothing to do...only withdrawn routes are listed in this update
return(0);
}
return(Parse_Path_Attributes(buf+sizeof(wr_len)+wr_len+sizeof(pa_len), pa_len, nlri_len));
}
