lib/interface.c

ソースコードを見る。

関数
static struct interface *	iface_find (struct in_addr ip, BOOL CheckMask)
static void	add_interface (struct in_addr ip, struct in_addr nmask)
static void	interpret_interface (char *token)
void	load_interfaces (void)
void	gfree_interfaces (void)
BOOL	interfaces_changed (void)
BOOL	ismyip (struct in_addr ip)
BOOL	is_local_net (struct in_addr from)
int	iface_count (void)
int	iface_count_nl (void)
interface *	get_interface (int n)
in_addr *	iface_n_ip (int n)
in_addr *	iface_n_bcast (int n)
in_addr *	iface_ip (struct in_addr ip)
BOOL	iface_local (struct in_addr ip)
変数
static struct iface_struct *	probed_ifaces
static int	total_probed
in_addr	allones_ip
in_addr	loopback_ip
static struct interface *	local_interfaces

---

関数

static struct interface* iface_find	(	struct in_addr	ip,
		BOOL	CheckMask
	)			[static]

interface.c の 38 行で定義されています。

参照先 interface::ip・is_zero_ip()・local_interfaces・interface::next・interface::nmask・same_net().

参照元 add_interface()・iface_ip()・iface_local().

{
        struct interface *i;
        if (is_zero_ip(ip)) return local_interfaces;

        for (i=local_interfaces;i;i=i->next)
                if (CheckMask) {
                        if (same_net(i->ip,ip,i->nmask)) return i;
                } else if ((i->ip).s_addr == ip.s_addr) return i;

        return NULL;
}

static void add_interface	(	struct in_addr	ip,
		struct in_addr	nmask
	)			[static]

interface.c の 55 行で定義されています。

参照先 allones_ip・interface::bcast・iface_find()・interface::ip・local_interfaces・interface::nmask.

参照元 interpret_interface()・load_interfaces().

{
        struct interface *iface;
        if (iface_find(ip, False)) {
                DEBUG(3,("not adding duplicate interface %s\n",inet_ntoa(ip)));
                return;
        }

#if !defined(__s390__)
        if (ip_equal(nmask, allones_ip)) {
                DEBUG(3,("not adding non-broadcast interface %s\n",inet_ntoa(ip)));
                return;
        }
#endif

        iface = SMB_MALLOC_P(struct interface);
        if (!iface) return;
        
        ZERO_STRUCTPN(iface);

        iface->ip = ip;
        iface->nmask = nmask;
        iface->bcast.s_addr = MKBCADDR(iface->ip.s_addr, iface->nmask.s_addr);

        DLIST_ADD(local_interfaces, iface);

        DEBUG(2,("added interface ip=%s ",inet_ntoa(iface->ip)));
        DEBUG(2,("bcast=%s ",inet_ntoa(iface->bcast)));
        DEBUG(2,("nmask=%s\n",inet_ntoa(iface->nmask)));             
}

static void interpret_interface

(

char *

token

)

[static]

interface.c の 99 行で定義されています。

参照先 add_interface()・allones_ip・gen_fnmatch()・interpret_addr2()・iface_struct::ip・name・probed_ifaces・same_net()・strchr_m()・total_probed・zero_ip().

{
        struct in_addr ip, nmask;
        char *p;
        int i, added=0;

        zero_ip(&ip);
        zero_ip(&nmask);
        
        /* first check if it is an interface name */
        for (i=0;i<total_probed;i++) {
                if (gen_fnmatch(token, probed_ifaces[i].name) == 0) {
                        add_interface(probed_ifaces[i].ip,
                                      probed_ifaces[i].netmask);
                        added = 1;
                }
        }
        if (added) return;

        /* maybe it is a DNS name */
        p = strchr_m(token,'/');
        if (!p) {
                ip = *interpret_addr2(token);
                for (i=0;i<total_probed;i++) {
                        if (ip.s_addr == probed_ifaces[i].ip.s_addr &&
                            !ip_equal(allones_ip, probed_ifaces[i].netmask)) {
                                add_interface(probed_ifaces[i].ip,
                                              probed_ifaces[i].netmask);
                                return;
                        }
                }
                DEBUG(2,("can't determine netmask for %s\n", token));
                return;
        }

        /* parse it into an IP address/netmasklength pair */
        *p = 0;
        ip = *interpret_addr2(token);
        *p++ = '/';

        if (strlen(p) > 2) {
                nmask = *interpret_addr2(p);
        } else {
                nmask.s_addr = htonl(((ALLONES >> atoi(p)) ^ ALLONES));
        }

        /* maybe the first component was a broadcast address */
        if (ip.s_addr == MKBCADDR(ip.s_addr, nmask.s_addr) ||
            ip.s_addr == MKNETADDR(ip.s_addr, nmask.s_addr)) {
                for (i=0;i<total_probed;i++) {
                        if (same_net(ip, probed_ifaces[i].ip, nmask)) {
                                add_interface(probed_ifaces[i].ip, nmask);
                                return;
                        }
                }
                DEBUG(2,("Can't determine ip for broadcast address %s\n", token));
                return;
        }

        add_interface(ip, nmask);
}

void load_interfaces

(

void

)

interface.c の 165 行で定義されています。

参照先 add_interface()・allones_ip・endif・get_interfaces()・interpret_addr2()・iface_struct::ip・local_interfaces・loopback_ip・memdup()・iface_struct::netmask・probed_ifaces・total_probed.

参照元 create_subnets()・main()・nss_wins_init()・parse_quota_set()・process_nonroot()・process_root()・py_samba_init()・reload_interfaces()・reload_services()・reload_services_file()・smbc_init_context().

{
        const char **ptr;
        int i;
        struct iface_struct ifaces[MAX_INTERFACES];

        ptr = lp_interfaces();

        allones_ip = *interpret_addr2("255.255.255.255");
        loopback_ip = *interpret_addr2("127.0.0.1");

        SAFE_FREE(probed_ifaces);

        /* dump the current interfaces if any */
        while (local_interfaces) {
                struct interface *iface = local_interfaces;
                DLIST_REMOVE(local_interfaces, local_interfaces);
                ZERO_STRUCTPN(iface);
                SAFE_FREE(iface);
        }

        /* probe the kernel for interfaces */
        total_probed = get_interfaces(ifaces, MAX_INTERFACES);

        if (total_probed > 0) {
                probed_ifaces = (struct iface_struct *)memdup(ifaces, sizeof(ifaces[0])*total_probed);
                if (!probed_ifaces) {
                        DEBUG(0,("ERROR: memdup failed\n"));
                        exit(1);
                }
        }

        /* if we don't have a interfaces line then use all broadcast capable 
           interfaces except loopback */
        if (!ptr || !*ptr || !**ptr) {
                if (total_probed <= 0) {
                        DEBUG(0,("ERROR: Could not determine network interfaces, you must use a interfaces config line\n"));
                        exit(1);
                }
                for (i=0;i<total_probed;i++) {
                        if (
#if !defined(__s390__)
                            probed_ifaces[i].netmask.s_addr != allones_ip.s_addr &&
#endif
                            probed_ifaces[i].ip.s_addr != loopback_ip.s_addr) {
                                add_interface(probed_ifaces[i].ip, 
                                              probed_ifaces[i].netmask);
                        }
                }
                return;
        }

        if (ptr) {
                while (*ptr) {
                        char *ptr_cpy = SMB_STRDUP(*ptr);
                        if (ptr_cpy) {
                                interpret_interface(ptr_cpy);
                                free(ptr_cpy);
                        }
                        ptr++;
                }
        }

        if (!local_interfaces) {
                DEBUG(0,("WARNING: no network interfaces found\n"));
        }
}

void gfree_interfaces

(

void

)

interface.c の 234 行で定義されています。

参照先 local_interfaces・probed_ifaces.

参照元 gfree_all().

{
        while (local_interfaces) {
                struct interface *iface = local_interfaces;
                DLIST_REMOVE(local_interfaces, local_interfaces);
                ZERO_STRUCTPN(iface);
                SAFE_FREE(iface);
        }

        SAFE_FREE(probed_ifaces);
}

BOOL interfaces_changed

(

void

)

interface.c の 249 行で定義されています。

参照先 get_interfaces()・probed_ifaces・total_probed.

参照元 reload_interfaces().

{
        int n;
        struct iface_struct ifaces[MAX_INTERFACES];

        n = get_interfaces(ifaces, MAX_INTERFACES);

        if ((n > 0 )&& (n != total_probed ||
            memcmp(ifaces, probed_ifaces, sizeof(ifaces[0])*n))) {
                return True;
        }
        
        return False;
}

BOOL ismyip

(

struct in_addr

ip

)

interface.c の 268 行で定義されています。

参照先 interface::ip・local_interfaces・interface::next.

参照元 announce_local_master_browser_to_domain_master_browser()・become_domain_master_query_success()・find_all_domain_master_names_query_success()・listen_for_packets()・process_name_release_request()・reply_netbios_packet()・resolve_wins()・send_mailslot()・send_netbios_packet()・server_cryptkey()・spoolss_connect_to_client()・sync_browse_lists()・wins_process_multihomed_name_registration_request()・wins_process_name_registration_request().

{
        struct interface *i;
        for (i=local_interfaces;i;i=i->next)
                if (ip_equal(i->ip,ip)) return True;
        return False;
}

BOOL is_local_net

(

struct in_addr

from

)

interface.c の 279 行で定義されています。

参照先 interface::ip・local_interfaces・interface::next・interface::nmask.

参照元 listen_for_packets().

{
        struct interface *i;
        for (i=local_interfaces;i;i=i->next) {
                if((from.s_addr & i->nmask.s_addr) == 
                   (i->ip.s_addr & i->nmask.s_addr))
                        return True;
        }
        return False;
}

int iface_count

(

void

)

interface.c の 293 行で定義されています。

参照先 local_interfaces・interface::next.

参照元 add_samba_names_to_subnet()・create_subnets()・ip_compare()・lookup_byname_backend()・name_resolve_bcast()・open_sockets_smbd()・query_one()・queue_query_name()・reload_interfaces().

{
        int ret = 0;
        struct interface *i;

        for (i=local_interfaces;i;i=i->next)
                ret++;
        return ret;
}

int iface_count_nl

(

void

)

interface.c の 306 行で定義されています。

参照先 interface::ip・local_interfaces・loopback_ip・interface::next.

参照元 create_subnets().

{
        int ret = 0;
        struct interface *i;

        for (i=local_interfaces;i;i=i->next) {
                if (ip_equal(i->ip, loopback_ip)) {
                        continue;
                }
                ret++;
        }
        return ret;
}

struct interface* get_interface

(

int

n

)

interface.c の 323 行で定義されています。

参照先 local_interfaces・interface::next.

参照元 create_subnets()・reload_interfaces().

{ 
        struct interface *i;
  
        for (i=local_interfaces;i && n;i=i->next)
                n--;

        if (i) return i;
        return NULL;
}

struct in_addr* iface_n_ip

(

int

n

)

interface.c の 337 行で定義されています。

参照先 interface::ip・local_interfaces・interface::next.

参照元 become_domain_master_stage2()・open_sockets_smbd()・queue_query_name().

{
        struct interface *i;
  
        for (i=local_interfaces;i && n;i=i->next)
                n--;

        if (i) return &i->ip;
        return NULL;
}

struct in_addr* iface_n_bcast

(

int

n

)

interface.c の 351 行で定義されています。

参照先 interface::bcast・local_interfaces・interface::next.

参照元 ip_compare()・lookup_byname_backend()・name_resolve_bcast()・query_one().

{
        struct interface *i;
  
        for (i=local_interfaces;i && n;i=i->next)
                n--;

        if (i) return &i->bcast;
        return NULL;
}

struct in_addr* iface_ip

(

struct in_addr

ip

)

interface.c の 368 行で定義されています。

参照先 iface_find()・interface::ip・local_interfaces.

参照元 msg_nmbd_send_packet()・process_logon_packet()・queue_register_name().

{
        struct interface *i = iface_find(ip, True);
        return(i ? &i->ip : &local_interfaces->ip);
}

BOOL iface_local

(

struct in_addr

ip

)

interface.c の 377 行で定義されています。

参照先 iface_find().

参照元 ip_compare().

{
        return iface_find(ip, True) ? True : False;
}

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変数

struct iface_struct* probed_ifaces [static]

interface.c の 23 行で定義されています。

参照元 gfree_interfaces()・interfaces_changed()・interpret_interface()・load_interfaces().

int total_probed [static]

interface.c の 24 行で定義されています。

参照元 interfaces_changed()・interpret_interface()・load_interfaces().

struct in_addr allones_ip

interface.c の 26 行で定義されています。

参照元 add_interface()・become_domain_master_query_success()・interpret_interface()・load_interfaces().

struct in_addr loopback_ip

interface.c の 27 行で定義されています。

参照元 create_subnets()・iface_count_nl()・listen_for_packets()・load_interfaces()・net_find_server()・nmbd_running()・queue_query_name()・reload_interfaces()・smbd_running()・wins_srv_ip_tag().

struct interface* local_interfaces [static]

interface.c の 29 行で定義されています。

参照元 add_interface()・get_interface()・gfree_interfaces()・iface_count()・iface_count_nl()・iface_find()・iface_ip()・iface_n_bcast()・iface_n_ip()・is_local_net()・ismyip()・load_interfaces().

---