diff options
Diffstat (limited to 'source3/nmbd/nmbd_subnetdb.c')
| -rw-r--r-- | source3/nmbd/nmbd_subnetdb.c | 395 |
1 files changed, 189 insertions, 206 deletions
diff --git a/source3/nmbd/nmbd_subnetdb.c b/source3/nmbd/nmbd_subnetdb.c index 6296826425..02a91f2760 100644 --- a/source3/nmbd/nmbd_subnetdb.c +++ b/source3/nmbd/nmbd_subnetdb.c @@ -63,28 +63,27 @@ static void add_subnet(struct subnet_record *subrec) * ************************************************************************** ** */ static int namelist_entry_compare( ubi_trItemPtr Item, ubi_trNodePtr Node ) - { - struct name_record *NR = (struct name_record *)Node; - - if( DEBUGLVL( 10 ) ) - { - struct nmb_name *Iname = (struct nmb_name *)Item; +{ + struct name_record *NR = (struct name_record *)Node; - Debug1( "nmbd_subnetdb:namelist_entry_compare()\n" ); - Debug1( "%d == memcmp( \"%s\", \"%s\", %d )\n", - memcmp( Item, &(NR->name), sizeof(struct nmb_name) ), - nmb_namestr(Iname), nmb_namestr(&NR->name), (int)sizeof(struct nmb_name) ); - } + if( DEBUGLVL( 10 ) ) { + struct nmb_name *Iname = (struct nmb_name *)Item; - return( memcmp( Item, &(NR->name), sizeof(struct nmb_name) ) ); - } /* namelist_entry_compare */ + Debug1( "nmbd_subnetdb:namelist_entry_compare()\n" ); + Debug1( "%d == memcmp( \"%s\", \"%s\", %d )\n", + memcmp( Item, &(NR->name), sizeof(struct nmb_name) ), + nmb_namestr(Iname), nmb_namestr(&NR->name), (int)sizeof(struct nmb_name) ); + } + return( memcmp( Item, &(NR->name), sizeof(struct nmb_name) ) ); +} /**************************************************************************** stop listening on a subnet we don't free the record as we don't have proper reference counting for it yet and it may be in use by a response record ****************************************************************************/ + void close_subnet(struct subnet_record *subrec) { DLIST_REMOVE(subnetlist, subrec); @@ -99,8 +98,6 @@ void close_subnet(struct subnet_record *subrec) } } - - /**************************************************************************** Create a subnet entry. ****************************************************************************/ @@ -109,102 +106,90 @@ static struct subnet_record *make_subnet(const char *name, enum subnet_type type struct in_addr myip, struct in_addr bcast_ip, struct in_addr mask_ip) { - struct subnet_record *subrec = NULL; - int nmb_sock, dgram_sock; - - /* Check if we are creating a non broadcast subnet - if so don't create - sockets. - */ - - if(type != NORMAL_SUBNET) - { - nmb_sock = -1; - dgram_sock = -1; - } - else - { - /* - * Attempt to open the sockets on port 137/138 for this interface - * and bind them. - * Fail the subnet creation if this fails. - */ - - if((nmb_sock = open_socket_in(SOCK_DGRAM, global_nmb_port,0, myip.s_addr,True)) == -1) - { - if( DEBUGLVL( 0 ) ) - { - Debug1( "nmbd_subnetdb:make_subnet()\n" ); - Debug1( " Failed to open nmb socket on interface %s ", inet_ntoa(myip) ); - Debug1( "for port %d. ", global_nmb_port ); - Debug1( "Error was %s\n", strerror(errno) ); - } - return NULL; - } - - if((dgram_sock = open_socket_in(SOCK_DGRAM,DGRAM_PORT,3, myip.s_addr,True)) == -1) - { - if( DEBUGLVL( 0 ) ) - { - Debug1( "nmbd_subnetdb:make_subnet()\n" ); - Debug1( " Failed to open dgram socket on interface %s ", inet_ntoa(myip) ); - Debug1( "for port %d. ", DGRAM_PORT ); - Debug1( "Error was %s\n", strerror(errno) ); - } - return NULL; - } - - /* Make sure we can broadcast from these sockets. */ - set_socket_options(nmb_sock,"SO_BROADCAST"); - set_socket_options(dgram_sock,"SO_BROADCAST"); - - } - - subrec = (struct subnet_record *)malloc(sizeof(*subrec)); - - if (!subrec) - { - DEBUG(0,("make_subnet: malloc fail !\n")); - close(nmb_sock); - close(dgram_sock); - return(NULL); - } + struct subnet_record *subrec = NULL; + int nmb_sock, dgram_sock; + + /* Check if we are creating a non broadcast subnet - if so don't create + sockets. */ + + if(type != NORMAL_SUBNET) { + nmb_sock = -1; + dgram_sock = -1; + } else { + /* + * Attempt to open the sockets on port 137/138 for this interface + * and bind them. + * Fail the subnet creation if this fails. + */ + + if((nmb_sock = open_socket_in(SOCK_DGRAM, global_nmb_port,0, myip.s_addr,True)) == -1) { + if( DEBUGLVL( 0 ) ) { + Debug1( "nmbd_subnetdb:make_subnet()\n" ); + Debug1( " Failed to open nmb socket on interface %s ", inet_ntoa(myip) ); + Debug1( "for port %d. ", global_nmb_port ); + Debug1( "Error was %s\n", strerror(errno) ); + } + return NULL; + } + + if((dgram_sock = open_socket_in(SOCK_DGRAM,DGRAM_PORT,3, myip.s_addr,True)) == -1) { + if( DEBUGLVL( 0 ) ) { + Debug1( "nmbd_subnetdb:make_subnet()\n" ); + Debug1( " Failed to open dgram socket on interface %s ", inet_ntoa(myip) ); + Debug1( "for port %d. ", DGRAM_PORT ); + Debug1( "Error was %s\n", strerror(errno) ); + } + return NULL; + } + + /* Make sure we can broadcast from these sockets. */ + set_socket_options(nmb_sock,"SO_BROADCAST"); + set_socket_options(dgram_sock,"SO_BROADCAST"); + } + + subrec = (struct subnet_record *)malloc(sizeof(*subrec)); + if (!subrec) { + DEBUG(0,("make_subnet: malloc fail !\n")); + close(nmb_sock); + close(dgram_sock); + return(NULL); + } - memset( (char *)subrec, '\0', sizeof(*subrec) ); - (void)ubi_trInitTree( subrec->namelist, - namelist_entry_compare, - ubi_trOVERWRITE ); - - if((subrec->subnet_name = strdup(name)) == NULL) - { - DEBUG(0,("make_subnet: malloc fail for subnet name !\n")); - close(nmb_sock); - close(dgram_sock); - ZERO_STRUCTP(subrec); - SAFE_FREE(subrec); - return(NULL); - } - - DEBUG(2, ("making subnet name:%s ", name )); - DEBUG(2, ("Broadcast address:%s ", inet_ntoa(bcast_ip))); - DEBUG(2, ("Subnet mask:%s\n", inet_ntoa(mask_ip))); + memset( (char *)subrec, '\0', sizeof(*subrec) ); + (void)ubi_trInitTree( subrec->namelist, + namelist_entry_compare, + ubi_trOVERWRITE ); + + if((subrec->subnet_name = strdup(name)) == NULL) { + DEBUG(0,("make_subnet: malloc fail for subnet name !\n")); + close(nmb_sock); + close(dgram_sock); + ZERO_STRUCTP(subrec); + SAFE_FREE(subrec); + return(NULL); + } + + DEBUG(2, ("making subnet name:%s ", name )); + DEBUG(2, ("Broadcast address:%s ", inet_ntoa(bcast_ip))); + DEBUG(2, ("Subnet mask:%s\n", inet_ntoa(mask_ip))); - subrec->namelist_changed = False; - subrec->work_changed = False; + subrec->namelist_changed = False; + subrec->work_changed = False; - subrec->bcast_ip = bcast_ip; - subrec->mask_ip = mask_ip; - subrec->myip = myip; - subrec->type = type; - subrec->nmb_sock = nmb_sock; - subrec->dgram_sock = dgram_sock; + subrec->bcast_ip = bcast_ip; + subrec->mask_ip = mask_ip; + subrec->myip = myip; + subrec->type = type; + subrec->nmb_sock = nmb_sock; + subrec->dgram_sock = dgram_sock; - return subrec; + return subrec; } - /**************************************************************************** Create a normal subnet **************************************************************************/ + struct subnet_record *make_normal_subnet(struct interface *iface) { struct subnet_record *subrec; @@ -217,100 +202,99 @@ struct subnet_record *make_normal_subnet(struct interface *iface) return subrec; } - /**************************************************************************** Create subnet entries. **************************************************************************/ BOOL create_subnets(void) { - int num_interfaces = iface_count(); - int i; - struct in_addr unicast_ip, ipzero; - extern struct in_addr loopback_ip; - - if(num_interfaces == 0) { - DEBUG(0,("create_subnets: No local interfaces !\n")); - DEBUG(0,("create_subnets: Waiting for an interface to appear ...\n")); - while (iface_count() == 0) { - sleep(5); - load_interfaces(); - } - } - - num_interfaces = iface_count(); - - /* - * Create subnets from all the local interfaces and thread them onto - * the linked list. - */ - - for (i = 0 ; i < num_interfaces; i++) - { - struct interface *iface = get_interface(i); - - /* - * We don't want to add a loopback interface, in case - * someone has added 127.0.0.1 for smbd, nmbd needs to - * ignore it here. JRA. - */ - - if (ip_equal(iface->ip, loopback_ip)) { - DEBUG(2,("create_subnets: Ignoring loopback interface.\n" )); - continue; - } - - if (!make_normal_subnet(iface)) return False; - } - - if (lp_we_are_a_wins_server()) { - /* Pick the first interface ip address as the WINS server ip. */ - unicast_ip = *iface_n_ip(0); - } else { - /* note that we do not set the wins server IP here. We just - set it at zero and let the wins registration code cope - with getting the IPs right for each packet */ - zero_ip(&unicast_ip); - } - - /* - * Create the unicast and remote broadcast subnets. - * Don't put these onto the linked list. - * The ip address of the unicast subnet is set to be - * the WINS server address, if it exists, or ipzero if not. - */ - - unicast_subnet = make_subnet( "UNICAST_SUBNET", UNICAST_SUBNET, - unicast_ip, unicast_ip, unicast_ip); - - zero_ip(&ipzero); - - remote_broadcast_subnet = make_subnet( "REMOTE_BROADCAST_SUBNET", - REMOTE_BROADCAST_SUBNET, - ipzero, ipzero, ipzero); - - if((unicast_subnet == NULL) || (remote_broadcast_subnet == NULL)) - return False; - - /* - * If we are WINS server, create the WINS_SERVER_SUBNET - don't put on - * the linked list. - */ - - if (lp_we_are_a_wins_server()) - { - if( (wins_server_subnet = make_subnet( "WINS_SERVER_SUBNET", - WINS_SERVER_SUBNET, - ipzero, ipzero, ipzero )) == NULL ) - return False; - } - - return True; + int num_interfaces = iface_count(); + int i; + struct in_addr unicast_ip, ipzero; + extern struct in_addr loopback_ip; + + if(num_interfaces == 0) { + DEBUG(0,("create_subnets: No local interfaces !\n")); + DEBUG(0,("create_subnets: Waiting for an interface to appear ...\n")); + while (iface_count() == 0) { + sleep(5); + load_interfaces(); + } + } + + num_interfaces = iface_count(); + + /* + * Create subnets from all the local interfaces and thread them onto + * the linked list. + */ + + for (i = 0 ; i < num_interfaces; i++) { + struct interface *iface = get_interface(i); + + /* + * We don't want to add a loopback interface, in case + * someone has added 127.0.0.1 for smbd, nmbd needs to + * ignore it here. JRA. + */ + + if (ip_equal(iface->ip, loopback_ip)) { + DEBUG(2,("create_subnets: Ignoring loopback interface.\n" )); + continue; + } + + if (!make_normal_subnet(iface)) + return False; + } + + if (lp_we_are_a_wins_server()) { + /* Pick the first interface ip address as the WINS server ip. */ + unicast_ip = *iface_n_ip(0); + } else { + /* note that we do not set the wins server IP here. We just + set it at zero and let the wins registration code cope + with getting the IPs right for each packet */ + zero_ip(&unicast_ip); + } + + /* + * Create the unicast and remote broadcast subnets. + * Don't put these onto the linked list. + * The ip address of the unicast subnet is set to be + * the WINS server address, if it exists, or ipzero if not. + */ + + unicast_subnet = make_subnet( "UNICAST_SUBNET", UNICAST_SUBNET, + unicast_ip, unicast_ip, unicast_ip); + + zero_ip(&ipzero); + + remote_broadcast_subnet = make_subnet( "REMOTE_BROADCAST_SUBNET", + REMOTE_BROADCAST_SUBNET, + ipzero, ipzero, ipzero); + + if((unicast_subnet == NULL) || (remote_broadcast_subnet == NULL)) + return False; + + /* + * If we are WINS server, create the WINS_SERVER_SUBNET - don't put on + * the linked list. + */ + + if (lp_we_are_a_wins_server()) { + if( (wins_server_subnet = make_subnet( "WINS_SERVER_SUBNET", + WINS_SERVER_SUBNET, + ipzero, ipzero, ipzero )) == NULL ) + return False; + } + + return True; } /******************************************************************* Function to tell us if we can use the unicast subnet. ******************************************************************/ + BOOL we_are_a_wins_client(void) { if (wins_srv_count() > 0) { @@ -326,12 +310,12 @@ Access function used by NEXT_SUBNET_INCLUDING_UNICAST struct subnet_record *get_next_subnet_maybe_unicast(struct subnet_record *subrec) { - if(subrec == unicast_subnet) - return NULL; - else if((subrec->next == NULL) && we_are_a_wins_client()) - return unicast_subnet; - else - return subrec->next; + if(subrec == unicast_subnet) + return NULL; + else if((subrec->next == NULL) && we_are_a_wins_client()) + return unicast_subnet; + else + return subrec->next; } /******************************************************************* @@ -343,19 +327,18 @@ struct subnet_record *get_next_subnet_maybe_unicast(struct subnet_record *subrec struct subnet_record *get_next_subnet_maybe_unicast_or_wins_server(struct subnet_record *subrec) { - if(subrec == unicast_subnet) - { - if(wins_server_subnet) - return wins_server_subnet; - else - return NULL; - } - - if(wins_server_subnet && subrec == wins_server_subnet) - return NULL; - - if((subrec->next == NULL) && we_are_a_wins_client()) - return unicast_subnet; - else - return subrec->next; + if(subrec == unicast_subnet) { + if(wins_server_subnet) + return wins_server_subnet; + else + return NULL; + } + + if(wins_server_subnet && subrec == wins_server_subnet) + return NULL; + + if((subrec->next == NULL) && we_are_a_wins_client()) + return unicast_subnet; + else + return subrec->next; } |