libsmb/nmblib.c

ソースコードを見る。

データ構造
struct	opcode_names
関数
static const char *	lookup_opcode_name (int opcode)
static void	debug_nmb_res_rec (struct res_rec *res, const char *hdr)
void	debug_nmb_packet (struct packet_struct *p)
static BOOL	handle_name_ptrs (unsigned char *ubuf, int *offset, int length, BOOL *got_pointer, int *ret)
static int	parse_nmb_name (char *inbuf, int ofs, int length, struct nmb_name *name)
void	put_name (char *dest, const char *name, int pad, unsigned int name_type)
static int	put_nmb_name (char *buf, int offset, struct nmb_name *name)
char *	nmb_namestr (const struct nmb_name *n)
static BOOL	parse_alloc_res_rec (char *inbuf, int *offset, int length, struct res_rec **recs, int count)
static int	put_res_rec (char *buf, int offset, struct res_rec *recs, int count)
static int	put_compressed_name_ptr (unsigned char *buf, int offset, struct res_rec *rec, int ptr_offset)
static BOOL	parse_dgram (char *inbuf, int length, struct dgram_packet *dgram)
static BOOL	parse_nmb (char *inbuf, int length, struct nmb_packet *nmb)
static struct packet_struct *	copy_nmb_packet (struct packet_struct *packet)
static struct packet_struct *	copy_dgram_packet (struct packet_struct *packet)
packet_struct *	copy_packet (struct packet_struct *packet)
static void	free_nmb_packet (struct nmb_packet *nmb)
static void	free_dgram_packet (struct dgram_packet *nmb)
void	free_packet (struct packet_struct *packet)
packet_struct *	parse_packet (char *buf, int length, enum packet_type packet_type)
packet_struct *	read_packet (int fd, enum packet_type packet_type)
static BOOL	send_udp (int fd, char *buf, int len, struct in_addr ip, int port)
static int	build_dgram (char *buf, struct packet_struct *p)
void	make_nmb_name (struct nmb_name *n, const char *name, int type)
BOOL	nmb_name_equal (struct nmb_name *n1, struct nmb_name *n2)
static int	build_nmb (char *buf, struct packet_struct *p)
int	build_packet (char *buf, struct packet_struct *p)
BOOL	send_packet (struct packet_struct *p)
packet_struct *	receive_packet (int fd, enum packet_type type, int t)
packet_struct *	receive_nmb_packet (int fd, int t, int trn_id)
packet_struct *	receive_dgram_packet (int fd, int t, const char *mailslot_name)
BOOL	match_mailslot_name (struct packet_struct *p, const char *mailslot_name)
int	matching_quad_bits (unsigned char *p1, unsigned char *p2)
static int	name_query_comp (unsigned char *p1, unsigned char *p2)
void	sort_query_replies (char *data, int n, struct in_addr ip)
char *	dns_to_netbios_name (const char *dns_name)
static int	name_interpret (char *in, fstring name)
int	name_mangle (char *In, char *Out, char name_type)
static char *	name_ptr (char *buf, int ofs)
int	name_extract (char *buf, int ofs, fstring name)
int	name_len (char *s1)
変数
in_addr	lastip
int	lastport
int	num_good_sends = 0
int	num_good_receives = 0
static struct opcode_names	nmb_header_opcode_names []
static unsigned char	sort_ip [4]

---

関数

static const char* lookup_opcode_name

(

int

opcode

)

[static]

nmblib.c の 48 行で定義されています。

参照先 nmb_header_opcode_names・opcode_names::nmb_opcode_name・opcode_names::opcode.

参照元 debug_nmb_packet().

{
        const struct opcode_names *op_namep;
        int i;

        for(i = 0; nmb_header_opcode_names[i].nmb_opcode_name != 0; i++) {
                op_namep = &nmb_header_opcode_names[i];
                if(opcode == op_namep->opcode)
                        return op_namep->nmb_opcode_name;
        }
        return "<unknown opcode>";
}

static void debug_nmb_res_rec	(	struct res_rec *	res,
		const char *	hdr
	)			[static]

nmblib.c の 65 行で定義されています。

参照先 nmb_namestr()・res_rec::rdata・res_rec::rdlength・res_rec::rr_class・res_rec::rr_name・res_rec::rr_type・res_rec::ttl.

参照元 debug_nmb_packet().

{
        int i, j;

        DEBUGADD( 4, ( "    %s: nmb_name=%s rr_type=%d rr_class=%d ttl=%d\n",
                hdr,
                nmb_namestr(&res->rr_name),
                res->rr_type,
                res->rr_class,
                res->ttl ) );

        if( res->rdlength == 0 || res->rdata == NULL )
                return;

        for (i = 0; i < res->rdlength; i+= MAX_NETBIOSNAME_LEN) {
                DEBUGADD(4, ("    %s %3x char ", hdr, i));

                for (j = 0; j < MAX_NETBIOSNAME_LEN; j++) {
                        unsigned char x = res->rdata[i+j];
                        if (x < 32 || x > 127)
                                x = '.';
          
                        if (i+j >= res->rdlength)
                                break;
                        DEBUGADD(4, ("%c", x));
                }
      
                DEBUGADD(4, ("   hex "));

                for (j = 0; j < MAX_NETBIOSNAME_LEN; j++) {
                        if (i+j >= res->rdlength)
                                break;
                        DEBUGADD(4, ("%02X", (unsigned char)res->rdata[i+j]));
                }
      
                DEBUGADD(4, ("\n"));
        }
}

void debug_nmb_packet

(

struct packet_struct *

p

)

nmblib.c の 108 行で定義されています。

参照先 nmb_packet::additional・nmb_packet::ancount・nmb_packet::answers・nmb_packet::arcount・dbgtext()・debug_nmb_res_rec()・nmb_packet::header・packet_struct::ip・lookup_opcode_name()・nmb_packet::name_trn_id・nmb_packet::nm_flags・packet_struct::nmb・nmb_namestr()・nmb_packet::nscount・nmb_packet::nsrecs・nmb_packet::opcode・packet_struct::packet・packet_struct::port・nmb_packet::qdcount・nmb_packet::question・nmb_packet::question_class・nmb_packet::question_name・nmb_packet::question_type・nmb_packet::rcode・nmb_packet::response.

参照元 name_query()・node_status_query()・process_nmb_request()・process_nmb_response()・reply_netbios_packet().

{
        struct nmb_packet *nmb = &p->packet.nmb;

        if( DEBUGLVL( 4 ) ) {
                dbgtext( "nmb packet from %s(%d) header: id=%d opcode=%s(%d) response=%s\n",
                        inet_ntoa(p->ip), p->port,
                        nmb->header.name_trn_id,
                        lookup_opcode_name(nmb->header.opcode),
                        nmb->header.opcode,
                        BOOLSTR(nmb->header.response) );
                dbgtext( "    header: flags: bcast=%s rec_avail=%s rec_des=%s trunc=%s auth=%s\n",
                        BOOLSTR(nmb->header.nm_flags.bcast),
                        BOOLSTR(nmb->header.nm_flags.recursion_available),
                        BOOLSTR(nmb->header.nm_flags.recursion_desired),
                        BOOLSTR(nmb->header.nm_flags.trunc),
                        BOOLSTR(nmb->header.nm_flags.authoritative) );
                dbgtext( "    header: rcode=%d qdcount=%d ancount=%d nscount=%d arcount=%d\n",
                        nmb->header.rcode,
                        nmb->header.qdcount,
                        nmb->header.ancount,
                        nmb->header.nscount,
                        nmb->header.arcount );
        }

        if (nmb->header.qdcount) {
                DEBUGADD( 4, ( "    question: q_name=%s q_type=%d q_class=%d\n",
                        nmb_namestr(&nmb->question.question_name),
                        nmb->question.question_type,
                        nmb->question.question_class) );
        }

        if (nmb->answers && nmb->header.ancount) {
                debug_nmb_res_rec(nmb->answers,"answers");
        }
        if (nmb->nsrecs && nmb->header.nscount) {
                debug_nmb_res_rec(nmb->nsrecs,"nsrecs");
        }
        if (nmb->additional && nmb->header.arcount) {
                debug_nmb_res_rec(nmb->additional,"additional");
        }
}

static BOOL handle_name_ptrs	(	unsigned char *	ubuf,
		int *	offset,
		int	length,
		BOOL *	got_pointer,
		int *	ret
	)			[static]

nmblib.c の 155 行で定義されています。

参照元 parse_nmb_name().

{
        int loop_count=0;
  
        while ((ubuf[*offset] & 0xC0) == 0xC0) {
                if (!*got_pointer)
                        (*ret) += 2;
                (*got_pointer)=True;
                (*offset) = ((ubuf[*offset] & ~0xC0)<<8) | ubuf[(*offset)+1];
                if (loop_count++ == 10 || (*offset) < 0 || (*offset)>(length-2)) {
                        return(False);
                }
        }
        return(True);
}

static int parse_nmb_name	(	char *	inbuf,
		int	ofs,
		int	length,
		struct nmb_name *	name
	)			[static]

nmblib.c の 177 行で定義されています。

参照先 handle_name_ptrs()・name.

参照元 parse_alloc_res_rec()・parse_dgram()・parse_nmb().

{
        int m,n=0;
        unsigned char *ubuf = (unsigned char *)inbuf;
        int ret = 0;
        BOOL got_pointer=False;
        int loop_count=0;
        int offset = ofs;

        if (length - offset < 2)
                return(0);  

        /* handle initial name pointers */
        if (!handle_name_ptrs(ubuf,&offset,length,&got_pointer,&ret))
                return(0);
  
        m = ubuf[offset];

        if (!m)
                return(0);
        if ((m & 0xC0) || offset+m+2 > length)
                return(0);

        memset((char *)name,'\0',sizeof(*name));

        /* the "compressed" part */
        if (!got_pointer)
                ret += m + 2;
        offset++;
        while (m > 0) {
                unsigned char c1,c2;
                c1 = ubuf[offset++]-'A';
                c2 = ubuf[offset++]-'A';
                if ((c1 & 0xF0) || (c2 & 0xF0) || (n > sizeof(name->name)-1))
                        return(0);
                name->name[n++] = (c1<<4) | c2;
                m -= 2;
        }
        name->name[n] = 0;

        if (n==MAX_NETBIOSNAME_LEN) {
                /* parse out the name type, its always in the 16th byte of the name */
                name->name_type = ((unsigned char)name->name[15]) & 0xff;
  
                /* remove trailing spaces */
                name->name[15] = 0;
                n = 14;
                while (n && name->name[n]==' ')
                        name->name[n--] = 0;  
        }

        /* now the domain parts (if any) */
        n = 0;
        while (ubuf[offset]) {
                /* we can have pointers within the domain part as well */
                if (!handle_name_ptrs(ubuf,&offset,length,&got_pointer,&ret))
                        return(0);

                m = ubuf[offset];
                /*
                 * Don't allow null domain parts.
                 */
                if (!m)
                        return(0);
                if (!got_pointer)
                        ret += m+1;
                if (n)
                        name->scope[n++] = '.';
                if (m+2+offset>length || n+m+1>sizeof(name->scope))
                        return(0);
                offset++;
                while (m--)
                        name->scope[n++] = (char)ubuf[offset++];

                /*
                 * Watch for malicious loops.
                 */
                if (loop_count++ == 10)
                        return 0;
        }
        name->scope[n++] = 0;  

        return(ret);
}

void put_name	(	char *	dest,
		const char *	name,
		int	pad,
		unsigned int	name_type
	)

nmblib.c の 268 行で定義されています。

参照先 len.

参照元 name_mangle()・put_nmb_name()・smb_krb5_gen_netbios_krb5_address().

{
        size_t len = strlen(name);

        memcpy(dest, name, (len < MAX_NETBIOSNAME_LEN) ? len : MAX_NETBIOSNAME_LEN - 1);
        if (len < MAX_NETBIOSNAME_LEN - 1) {
                memset(dest + len, pad, MAX_NETBIOSNAME_LEN - 1 - len);
        }
        dest[MAX_NETBIOSNAME_LEN - 1] = name_type;
}

static int put_nmb_name	(	char *	buf,
		int	offset,
		struct nmb_name *	name
	)			[static]

nmblib.c の 288 行で定義されています。

参照先 name・put_name()・strchr_m().

参照元 build_dgram()・build_nmb()・put_res_rec().

{
        int ret,m;
        nstring buf1;
        char *p;

        if (strcmp(name->name,"*") == 0) {
                /* special case for wildcard name */
                put_name(buf1, "*", '\0', name->name_type);
        } else {
                put_name(buf1, name->name, ' ', name->name_type);
        }

        buf[offset] = 0x20;

        ret = 34;

        for (m=0;m<MAX_NETBIOSNAME_LEN;m++) {
                buf[offset+1+2*m] = 'A' + ((buf1[m]>>4)&0xF);
                buf[offset+2+2*m] = 'A' + (buf1[m]&0xF);
        }
        offset += 33;

        buf[offset] = 0;

        if (name->scope[0]) {
                /* XXXX this scope handling needs testing */
                ret += strlen(name->scope) + 1;
                safe_strcpy(&buf[offset+1],name->scope,sizeof(name->scope));  
  
                p = &buf[offset+1];
                while ((p = strchr_m(p,'.'))) {
                        buf[offset] = PTR_DIFF(p,&buf[offset+1]);
                        offset += (buf[offset] + 1);
                        p = &buf[offset+1];
                }
                buf[offset] = strlen(&buf[offset+1]);
        }

        return(ret);
}

char* nmb_namestr

(

const struct nmb_name *

n

)

nmblib.c の 334 行で定義されています。

参照先 nmb_name::name・name・nmb_name::name_type・pull_ascii_fstring()・nmb_name::scope.

参照元 add_name_to_subnet()・announce_local_master_browser_to_domain_master_browser()・become_domain_master_browser_wins()・become_domain_master_fail()・become_domain_master_query_fail()・become_domain_master_query_success()・become_local_master_fail1()・become_local_master_fail2()・become_logon_server_fail()・check_elections()・cli_send_mailslot()・cli_start_connection()・debug_nmb_packet()・debug_nmb_res_rec()・dump_name_record()・expire_names_on_subnet()・fail_register()・find_all_domain_master_names_query_fail()・find_domain_master_name_query_fail()・find_name_on_subnet()・find_name_on_wins_subnet()・initiate_multihomed_name_register_packet()・initiate_name_query_packet()・initiate_name_query_packet_from_wins_server()・initiate_name_refresh_packet()・initiate_name_register_packet()・initiate_name_release_packet()・initiate_node_status_packet()・multihomed_register_one()・my_name_register_failed()・node_status()・node_status_response()・node_status_timeout_response()・process_announce_request()・process_browse_packet()・process_dgram()・process_get_backup_list_request()・process_host_announce()・process_lanman_packet()・process_lm_announce_request()・process_lm_host_announce()・process_local_master_announce()・process_name_query_request()・process_name_refresh_request()・process_name_registration_request()・process_name_release_request()・process_node_status_request()・process_reset_browser()・process_workgroup_announce()・query_name()・query_name_from_wins_server()・query_name_response()・query_name_timeout_response()・queue_dns_query()・queue_wins_refresh()・register_name()・register_name_response()・register_name_timeout_response()・release_msbrowse_name_fail()・release_msbrowse_name_success()・release_name()・release_name_response()・release_name_timeout_response()・reply_netbios_packet()・run_elections()・send_backup_list_response()・send_mailslot()・standard_fail_register()・standard_success_release()・sync_with_dmb()・unbecome_local_master_fail()・unbecome_local_master_success()・wins_hook()・wins_multihomed_register_query_fail()・wins_multihomed_register_query_success()・wins_process_multihomed_name_registration_request()・wins_process_name_query_request()・wins_process_name_refresh_request()・wins_process_name_registration_request()・wins_process_name_release_request()・wins_processing_traverse_fn()・wins_proxy_name_query_request_fail()・wins_proxy_name_query_request_success()・wins_register_query_fail()・wins_register_query_success()・wins_registration_timeout()・wins_release_name()・wins_write_name_record().

{
        static int i=0;
        static fstring ret[4];
        fstring name;
        char *p = ret[i];

        pull_ascii_fstring(name, n->name);
        if (!n->scope[0])
                slprintf(p,sizeof(fstring)-1, "%s<%02x>",name,n->name_type);
        else
                slprintf(p,sizeof(fstring)-1, "%s<%02x>.%s",name,n->name_type,n->scope);

        i = (i+1)%4;
        return(p);
}

static BOOL parse_alloc_res_rec	(	char *	inbuf,
		int *	offset,
		int	length,
		struct res_rec **	recs,
		int	count
	)			[static]

nmblib.c の 355 行で定義されています。

参照先 parse_nmb_name().

参照元 parse_nmb().

{
        int i;

        *recs = SMB_MALLOC_ARRAY(struct res_rec, count);
        if (!*recs)
                return(False);

        memset((char *)*recs,'\0',sizeof(**recs)*count);

        for (i=0;i<count;i++) {
                int l = parse_nmb_name(inbuf,*offset,length,&(*recs)[i].rr_name);
                (*offset) += l;
                if (!l || (*offset)+10 > length) {
                        SAFE_FREE(*recs);
                        return(False);
                }
                (*recs)[i].rr_type = RSVAL(inbuf,(*offset));
                (*recs)[i].rr_class = RSVAL(inbuf,(*offset)+2);
                (*recs)[i].ttl = RIVAL(inbuf,(*offset)+4);
                (*recs)[i].rdlength = RSVAL(inbuf,(*offset)+8);
                (*offset) += 10;
                if ((*recs)[i].rdlength>sizeof((*recs)[i].rdata) || 
                                (*offset)+(*recs)[i].rdlength > length) {
                        SAFE_FREE(*recs);
                        return(False);
                }
                memcpy((*recs)[i].rdata,inbuf+(*offset),(*recs)[i].rdlength);
                (*offset) += (*recs)[i].rdlength;    
        }
        return(True);
}

static int put_res_rec	(	char *	buf,
		int	offset,
		struct res_rec *	recs,
		int	count
	)			[static]

nmblib.c の 393 行で定義されています。

参照先 put_nmb_name()・res_rec::rdlength.

参照元 build_nmb().

{
        int ret=0;
        int i;

        for (i=0;i<count;i++) {
                int l = put_nmb_name(buf,offset,&recs[i].rr_name);
                offset += l;
                ret += l;
                RSSVAL(buf,offset,recs[i].rr_type);
                RSSVAL(buf,offset+2,recs[i].rr_class);
                RSIVAL(buf,offset+4,recs[i].ttl);
                RSSVAL(buf,offset+8,recs[i].rdlength);
                memcpy(buf+offset+10,recs[i].rdata,recs[i].rdlength);
                offset += 10+recs[i].rdlength;
                ret += 10+recs[i].rdlength;
        }

        return(ret);
}

static int put_compressed_name_ptr	(	unsigned char *	buf,
		int	offset,
		struct res_rec *	rec,
		int	ptr_offset
	)			[static]

nmblib.c の 418 行で定義されています。

参照先 res_rec::rdata・res_rec::rdlength・res_rec::rr_class・res_rec::rr_type・res_rec::ttl.

参照元 build_nmb().

{  
        int ret=0;
        buf[offset] = (0xC0 | ((ptr_offset >> 8) & 0xFF));
        buf[offset+1] = (ptr_offset & 0xFF);
        offset += 2;
        ret += 2;
        RSSVAL(buf,offset,rec->rr_type);
        RSSVAL(buf,offset+2,rec->rr_class);
        RSIVAL(buf,offset+4,rec->ttl);
        RSSVAL(buf,offset+8,rec->rdlength);
        memcpy(buf+offset+10,rec->rdata,rec->rdlength);
        offset += 10+rec->rdlength;
        ret += 10+rec->rdlength;
    
        return(ret);
}

static BOOL parse_dgram	(	char *	inbuf,
		int	length,
		struct dgram_packet *	dgram
	)			[static]

nmblib.c の 443 行で定義されています。

参照先 flags・parse_nmb_name().

参照元 parse_packet().

{
        int offset;
        int flags;

        memset((char *)dgram,'\0',sizeof(*dgram));

        if (length < 14)
                return(False);

        dgram->header.msg_type = CVAL(inbuf,0);
        flags = CVAL(inbuf,1);
        dgram->header.flags.node_type = (enum node_type)((flags>>2)&3);
        if (flags & 1)
                dgram->header.flags.more = True;
        if (flags & 2)
                dgram->header.flags.first = True;
        dgram->header.dgm_id = RSVAL(inbuf,2);
        putip((char *)&dgram->header.source_ip,inbuf+4);
        dgram->header.source_port = RSVAL(inbuf,8);
        dgram->header.dgm_length = RSVAL(inbuf,10);
        dgram->header.packet_offset = RSVAL(inbuf,12);

        offset = 14;

        if (dgram->header.msg_type == 0x10 ||
                        dgram->header.msg_type == 0x11 ||
                        dgram->header.msg_type == 0x12) {      
                offset += parse_nmb_name(inbuf,offset,length,&dgram->source_name);
                offset += parse_nmb_name(inbuf,offset,length,&dgram->dest_name);
        }

        if (offset >= length || (length-offset > sizeof(dgram->data))) 
                return(False);

        dgram->datasize = length-offset;
        memcpy(dgram->data,inbuf+offset,dgram->datasize);

        /* Paranioa. Ensure the last 2 bytes in the dgram buffer are
           zero. This should be true anyway, just enforce it for paranioa sake. JRA. */
        SMB_ASSERT(dgram->datasize <= (sizeof(dgram->data)-2));
        memset(&dgram->data[sizeof(dgram->data)-2], '\0', 2);

        return(True);
}

static BOOL parse_nmb	(	char *	inbuf,
		int	length,
		struct nmb_packet *	nmb
	)			[static]

nmblib.c の 494 行で定義されています。

参照先 nmb_packet::nm_flags・parse_alloc_res_rec()・parse_nmb_name().

参照元 parse_packet().

{
        int nm_flags,offset;

        memset((char *)nmb,'\0',sizeof(*nmb));

        if (length < 12)
                return(False);

        /* parse the header */
        nmb->header.name_trn_id = RSVAL(inbuf,0);

        DEBUG(10,("parse_nmb: packet id = %d\n", nmb->header.name_trn_id));

        nmb->header.opcode = (CVAL(inbuf,2) >> 3) & 0xF;
        nmb->header.response = ((CVAL(inbuf,2)>>7)&1)?True:False;
        nm_flags = ((CVAL(inbuf,2) & 0x7) << 4) + (CVAL(inbuf,3)>>4);
        nmb->header.nm_flags.bcast = (nm_flags&1)?True:False;
        nmb->header.nm_flags.recursion_available = (nm_flags&8)?True:False;
        nmb->header.nm_flags.recursion_desired = (nm_flags&0x10)?True:False;
        nmb->header.nm_flags.trunc = (nm_flags&0x20)?True:False;
        nmb->header.nm_flags.authoritative = (nm_flags&0x40)?True:False;  
        nmb->header.rcode = CVAL(inbuf,3) & 0xF;
        nmb->header.qdcount = RSVAL(inbuf,4);
        nmb->header.ancount = RSVAL(inbuf,6);
        nmb->header.nscount = RSVAL(inbuf,8);
        nmb->header.arcount = RSVAL(inbuf,10);
  
        if (nmb->header.qdcount) {
                offset = parse_nmb_name(inbuf,12,length,&nmb->question.question_name);
                if (!offset)
                        return(False);

                if (length - (12+offset) < 4)
                        return(False);
                nmb->question.question_type = RSVAL(inbuf,12+offset);
                nmb->question.question_class = RSVAL(inbuf,12+offset+2);

                offset += 12+4;
        } else {
                offset = 12;
        }

        /* and any resource records */
        if (nmb->header.ancount && !parse_alloc_res_rec(inbuf,&offset,length,&nmb->answers,
                                        nmb->header.ancount))
                return(False);

        if (nmb->header.nscount && !parse_alloc_res_rec(inbuf,&offset,length,&nmb->nsrecs,
                                        nmb->header.nscount))
                return(False);
  
        if (nmb->header.arcount && !parse_alloc_res_rec(inbuf,&offset,length,&nmb->additional,
                                        nmb->header.arcount))
                return(False);

        return(True);
}

static struct packet_struct* copy_nmb_packet

(

struct packet_struct *

packet

)

[static]

nmblib.c の 557 行で定義されています。

参照先 nmb_packet::additional・nmb_packet::ancount・nmb_packet::answers・nmb_packet::arcount・nmb_packet::header・packet_struct::locked・packet_struct::nmb・nmb_packet::nscount・nmb_packet::nsrecs・packet_struct::packet・packet.

参照元 copy_packet().

{  
        struct nmb_packet *nmb;
        struct nmb_packet *copy_nmb;
        struct packet_struct *pkt_copy;

        if(( pkt_copy = SMB_MALLOC_P(struct packet_struct)) == NULL) {
                DEBUG(0,("copy_nmb_packet: malloc fail.\n"));
                return NULL;
        }

        /* Structure copy of entire thing. */

        *pkt_copy = *packet;

        /* Ensure this copy is not locked. */
        pkt_copy->locked = False;

        /* Ensure this copy has no resource records. */
        nmb = &packet->packet.nmb;
        copy_nmb = &pkt_copy->packet.nmb;

        copy_nmb->answers = NULL;
        copy_nmb->nsrecs = NULL;
        copy_nmb->additional = NULL;

        /* Now copy any resource records. */

        if (nmb->answers) {
                if((copy_nmb->answers = SMB_MALLOC_ARRAY(struct res_rec,nmb->header.ancount)) == NULL)
                        goto free_and_exit;
                memcpy((char *)copy_nmb->answers, (char *)nmb->answers, 
                                nmb->header.ancount * sizeof(struct res_rec));
        }
        if (nmb->nsrecs) {
                if((copy_nmb->nsrecs = SMB_MALLOC_ARRAY(struct res_rec, nmb->header.nscount)) == NULL)
                        goto free_and_exit;
                memcpy((char *)copy_nmb->nsrecs, (char *)nmb->nsrecs, 
                                nmb->header.nscount * sizeof(struct res_rec));
        }
        if (nmb->additional) {
                if((copy_nmb->additional = SMB_MALLOC_ARRAY(struct res_rec, nmb->header.arcount)) == NULL)
                        goto free_and_exit;
                memcpy((char *)copy_nmb->additional, (char *)nmb->additional, 
                                nmb->header.arcount * sizeof(struct res_rec));
        }

        return pkt_copy;

 free_and_exit:

        SAFE_FREE(copy_nmb->answers);
        SAFE_FREE(copy_nmb->nsrecs);
        SAFE_FREE(copy_nmb->additional);
        SAFE_FREE(pkt_copy);

        DEBUG(0,("copy_nmb_packet: malloc fail in resource records.\n"));
        return NULL;
}

static struct packet_struct* copy_dgram_packet

(

struct packet_struct *

packet

)

[static]

nmblib.c の 621 行で定義されています。

参照先 packet_struct::locked・packet.

参照元 copy_packet().

{ 
        struct packet_struct *pkt_copy;

        if(( pkt_copy = SMB_MALLOC_P(struct packet_struct)) == NULL) {
                DEBUG(0,("copy_dgram_packet: malloc fail.\n"));
                return NULL;
        }

        /* Structure copy of entire thing. */

        *pkt_copy = *packet;

        /* Ensure this copy is not locked. */
        pkt_copy->locked = False;

        /* There are no additional pointers in a dgram packet,
                we are finished. */
        return pkt_copy;
}

struct packet_struct* copy_packet

(

struct packet_struct *

packet

)

nmblib.c の 646 行で定義されています。

参照先 copy_dgram_packet()・copy_nmb_packet()・DGRAM_PACKET・NMB_PACKET・packet.

参照元 reply_netbios_packet()・send_mailslot()・send_netbios_packet()・wins_proxy_userdata_copy_fn().

{  
        if(packet->packet_type == NMB_PACKET)
                return copy_nmb_packet(packet);
        else if (packet->packet_type == DGRAM_PACKET)
                return copy_dgram_packet(packet);
        return NULL;
}

static void free_nmb_packet

(

struct nmb_packet *

nmb

)

[static]

nmblib.c の 659 行で定義されています。

参照先 nmb_packet::additional・nmb_packet::answers・packet_struct::nmb・nmb_packet::nsrecs.

参照元 free_packet().

{  
        SAFE_FREE(nmb->answers);
        SAFE_FREE(nmb->nsrecs);
        SAFE_FREE(nmb->additional);
}

static void free_dgram_packet

(

struct dgram_packet *

nmb

)

[static]

nmblib.c の 670 行で定義されています。

参照元 free_packet().

{  
        /* We have nothing to do for a dgram packet. */
}

void free_packet

(

struct packet_struct *

packet

)

nmblib.c の 679 行で定義されています。

参照先 DGRAM_PACKET・free_dgram_packet()・free_nmb_packet()・NMB_PACKET・packet.

参照元 listen_for_packets()・name_query()・node_status_query()・parse_packet()・queue_node_status()・queue_query_name()・queue_query_name_from_wins_server()・queue_register_multihomed_name()・queue_register_name()・queue_release_name()・queue_wins_refresh()・receive_dgram_packet()・receive_nmb_packet()・remove_response_record()・run_dns_queue()・run_packet_queue()・traverse_match()・wins_multihomed_register_query_fail()・wins_multihomed_register_query_success()・wins_proxy_userdata_free_fn()・wins_register_query_fail()・wins_register_query_success().

{  
        if (packet->locked) 
                return;
        if (packet->packet_type == NMB_PACKET)
                free_nmb_packet(&packet->packet.nmb);
        else if (packet->packet_type == DGRAM_PACKET)
                free_dgram_packet(&packet->packet.dgram);
        ZERO_STRUCTPN(packet);
        SAFE_FREE(packet);
}

struct packet_struct* parse_packet	(	char *	buf,
		int	length,
		enum packet_type	packet_type
	)

nmblib.c の 695 行で定義されています。

参照先 packet_struct::dgram・DGRAM_PACKET・free_packet()・packet_struct::ip・lastip・lastport・packet_struct::locked・packet_struct::next・packet_struct::nmb・NMB_PACKET・packet_struct::packet・packet_struct::packet_type・parse_dgram()・parse_nmb()・packet_struct::port・packet_struct::prev・packet_struct::timestamp.

参照元 read_packet()・traverse_match().

{
        struct packet_struct *p;
        BOOL ok=False;

        p = SMB_MALLOC_P(struct packet_struct);
        if (!p)
                return(NULL);

        ZERO_STRUCTP(p);        /* initialize for possible padding */

        p->next = NULL;
        p->prev = NULL;
        p->ip = lastip;
        p->port = lastport;
        p->locked = False;
        p->timestamp = time(NULL);
        p->packet_type = packet_type;

        switch (packet_type) {
        case NMB_PACKET:
                ok = parse_nmb(buf,length,&p->packet.nmb);
                break;
                
        case DGRAM_PACKET:
                ok = parse_dgram(buf,length,&p->packet.dgram);
                break;
        }

        if (!ok) {
                free_packet(p);
                return NULL;
        }

        return p;
}

struct packet_struct* read_packet	(	int	fd,
		enum packet_type	packet_type
	)

nmblib.c の 738 行で定義されています。

参照先 buf・num_good_receives・packet・parse_packet()・read_udp_socket().

参照元 listen_for_packets()・receive_packet().

{
        struct packet_struct *packet;
        char buf[MAX_DGRAM_SIZE];
        int length;
        
        length = read_udp_socket(fd,buf,sizeof(buf));
        if (length < MIN_DGRAM_SIZE)
                return(NULL);
        
        packet = parse_packet(buf, length, packet_type);
        if (!packet)
                return NULL;

        packet->fd = fd;
        
        num_good_receives++;
        
        DEBUG(5,("Received a packet of len %d from (%s) port %d\n",
                 length, inet_ntoa(packet->ip), packet->port ) );
        
        return(packet);
}

static BOOL send_udp	(	int	fd,
		char *	buf,
		int	len,
		struct in_addr	ip,
		int	port
	)			[static]

nmblib.c の 766 行で定義されています。

参照先 errno・num_good_sends・strerror().

参照元 send_packet().

{
        BOOL ret = False;
        int i;
        struct sockaddr_in sock_out;

        /* set the address and port */
        memset((char *)&sock_out,'\0',sizeof(sock_out));
        putip((char *)&sock_out.sin_addr,(char *)&ip);
        sock_out.sin_port = htons( port );
        sock_out.sin_family = AF_INET;
  
        DEBUG( 5, ( "Sending a packet of len %d to (%s) on port %d\n",
                        len, inet_ntoa(ip), port ) );

        /*
         * Patch to fix asynch error notifications from Linux kernel.
         */
        
        for (i = 0; i < 5; i++) {
                ret = (sendto(fd,buf,len,0,(struct sockaddr *)&sock_out, sizeof(sock_out)) >= 0);
                if (ret || errno != ECONNREFUSED)
                        break;
        }

        if (!ret)
                DEBUG(0,("Packet send failed to %s(%d) ERRNO=%s\n",
                        inet_ntoa(ip),port,strerror(errno)));

        if (ret)
                num_good_sends++;

        return(ret);
}

static int build_dgram	(	char *	buf,
		struct packet_struct *	p
	)			[static]

nmblib.c の 817 行で定義されています。

参照先 dgram_packet::data・dgram_packet::datasize・dgram_packet::dest_name・dgram_packet::dgm_id・dgram_packet::dgm_length・packet_struct::dgram・dgram_packet::flags・dgram_packet::header・dgram_packet::msg_type・packet_struct::packet・dgram_packet::packet_offset・put_nmb_name()・dgram_packet::source_ip・dgram_packet::source_name・dgram_packet::source_port.

参照元 build_packet().

{
        struct dgram_packet *dgram = &p->packet.dgram;
        unsigned char *ubuf = (unsigned char *)buf;
        int offset=0;

        /* put in the header */
        ubuf[0] = dgram->header.msg_type;
        ubuf[1] = (((int)dgram->header.flags.node_type)<<2);
        if (dgram->header.flags.more)
                ubuf[1] |= 1;
        if (dgram->header.flags.first)
                ubuf[1] |= 2;
        RSSVAL(ubuf,2,dgram->header.dgm_id);
        putip(ubuf+4,(char *)&dgram->header.source_ip);
        RSSVAL(ubuf,8,dgram->header.source_port);
        RSSVAL(ubuf,12,dgram->header.packet_offset);

        offset = 14;

        if (dgram->header.msg_type == 0x10 ||
                        dgram->header.msg_type == 0x11 ||
                        dgram->header.msg_type == 0x12) {      
                offset += put_nmb_name((char *)ubuf,offset,&dgram->source_name);
                offset += put_nmb_name((char *)ubuf,offset,&dgram->dest_name);
        }

        memcpy(ubuf+offset,dgram->data,dgram->datasize);
        offset += dgram->datasize;

        /* automatically set the dgm_length
         * NOTE: RFC1002 says the dgm_length does *not*
         *       include the fourteen-byte header. crh
         */
        dgram->header.dgm_length = (offset - 14);
        RSSVAL(ubuf,10,dgram->header.dgm_length); 

        return(offset);
}

void make_nmb_name	(	struct nmb_name *	n,
		const char *	name,
		int	type
	)

nmblib.c の 861 行で定義されています。

参照先 global_scope()・push_ascii()・strupper_m().

参照元 add_logon_names()・add_name_to_subnet()・attempt_netbios_session_request()・become_domain_master_browser_bcast()・become_domain_master_browser_wins()・become_domain_master_stage2()・become_logon_server_success()・check_elections()・cli_send_mailslot()・cli_servertime()・cli_start_connection()・cm_prepare_connection()・connect_one()・do_connect()・do_connection()・do_message_op()・do_node_status()・domain_master_node_status_success()・find_all_domain_master_names_query_success()・find_domain_master_name_query_success()・get_domain_master_name_node_status_success()・lookup_byaddr_backend()・name_query()・name_status_find()・nmbd_wins_new_entry()・open_nbt_connection()・py_smb_session_request()・query_name()・query_name_from_wins_server()・register_my_workgroup_and_names()・register_name()・release_1d_name()・remote_password_change()・reset_workgroup_state()・rpcclient_connect()・run_elections()・send_mailslot()・smbc_server()・sync_all_dmbs()・sync_child()・unbecome_local_master_browser().

{
        fstring unix_name;
        memset( (char *)n, '\0', sizeof(struct nmb_name) );
        fstrcpy(unix_name, name);
        strupper_m(unix_name);
        push_ascii(n->name, unix_name, sizeof(n->name), STR_TERMINATE);
        n->name_type = (unsigned int)type & 0xFF;
        push_ascii(n->scope,  global_scope(), 64, STR_TERMINATE);
}

BOOL nmb_name_equal	(	struct nmb_name *	n1,
		struct nmb_name *	n2
	)

nmblib.c の 876 行で定義されています。

参照先 nmb_name::name・nmb_name::name_type・nmb_name::scope・strequal().

参照元 attempt_netbios_session_request()・is_refresh_already_queued()・node_status_response()・query_current()・register_name_response()・release_name_response()・run_dns_queue().

{
        return ((n1->name_type == n2->name_type) &&
                strequal(n1->name ,n2->name ) &&
                strequal(n1->scope,n2->scope));
}

static int build_nmb	(	char *	buf,
		struct packet_struct *	p
	)			[static]

nmblib.c の 892 行で定義されています。

参照先 nmb_packet::additional・nmb_packet::ancount・nmb_packet::answers・nmb_packet::arcount・nmb_packet::header・nmb_packet::name_trn_id・nmb_packet::nm_flags・packet_struct::nmb・nmb_packet::nscount・nmb_packet::nsrecs・nmb_packet::opcode・packet_struct::packet・put_compressed_name_ptr()・put_nmb_name()・put_res_rec()・nmb_packet::qdcount・nmb_packet::question・nmb_packet::question_class・nmb_packet::question_name・nmb_packet::question_type・nmb_packet::rcode・nmb_packet::response.

参照元 build_packet().

{
        struct nmb_packet *nmb = &p->packet.nmb;
        unsigned char *ubuf = (unsigned char *)buf;
        int offset=0;

        /* put in the header */
        RSSVAL(ubuf,offset,nmb->header.name_trn_id);
        ubuf[offset+2] = (nmb->header.opcode & 0xF) << 3;
        if (nmb->header.response)
                ubuf[offset+2] |= (1<<7);
        if (nmb->header.nm_flags.authoritative && 
                        nmb->header.response)
                ubuf[offset+2] |= 0x4;
        if (nmb->header.nm_flags.trunc)
                ubuf[offset+2] |= 0x2;
        if (nmb->header.nm_flags.recursion_desired)
                ubuf[offset+2] |= 0x1;
        if (nmb->header.nm_flags.recursion_available &&
                        nmb->header.response)
                ubuf[offset+3] |= 0x80;
        if (nmb->header.nm_flags.bcast)
                ubuf[offset+3] |= 0x10;
        ubuf[offset+3] |= (nmb->header.rcode & 0xF);

        RSSVAL(ubuf,offset+4,nmb->header.qdcount);
        RSSVAL(ubuf,offset+6,nmb->header.ancount);
        RSSVAL(ubuf,offset+8,nmb->header.nscount);
        RSSVAL(ubuf,offset+10,nmb->header.arcount);
  
        offset += 12;
        if (nmb->header.qdcount) {
                /* XXXX this doesn't handle a qdcount of > 1 */
                offset += put_nmb_name((char *)ubuf,offset,&nmb->question.question_name);
                RSSVAL(ubuf,offset,nmb->question.question_type);
                RSSVAL(ubuf,offset+2,nmb->question.question_class);
                offset += 4;
        }

        if (nmb->header.ancount)
                offset += put_res_rec((char *)ubuf,offset,nmb->answers,
                                nmb->header.ancount);

        if (nmb->header.nscount)
                offset += put_res_rec((char *)ubuf,offset,nmb->nsrecs,
                                nmb->header.nscount);

        /*
         * The spec says we must put compressed name pointers
         * in the following outgoing packets :
         * NAME_REGISTRATION_REQUEST, NAME_REFRESH_REQUEST,
         * NAME_RELEASE_REQUEST.
         */

        if((nmb->header.response == False) &&
                        ((nmb->header.opcode == NMB_NAME_REG_OPCODE) ||
                        (nmb->header.opcode == NMB_NAME_RELEASE_OPCODE) ||
                        (nmb->header.opcode == NMB_NAME_REFRESH_OPCODE_8) ||
                        (nmb->header.opcode == NMB_NAME_REFRESH_OPCODE_9) ||
                        (nmb->header.opcode == NMB_NAME_MULTIHOMED_REG_OPCODE)) &&
                        (nmb->header.arcount == 1)) {

                offset += put_compressed_name_ptr(ubuf,offset,nmb->additional,12);

        } else if (nmb->header.arcount) {
                offset += put_res_rec((char *)ubuf,offset,nmb->additional,
                        nmb->header.arcount);  
        }
        return(offset);
}

int build_packet	(	char *	buf,
		struct packet_struct *	p
	)

nmblib.c の 967 行で定義されています。

参照先 build_dgram()・build_nmb()・DGRAM_PACKET・len・NMB_PACKET・packet_struct::packet_type.

参照元 send_packet()・unexpected_packet().

{
        int len = 0;

        switch (p->packet_type) {
        case NMB_PACKET:
                len = build_nmb(buf,p);
                break;

        case DGRAM_PACKET:
                len = build_dgram(buf,p);
                break;
        }

        return len;
}

BOOL send_packet

(

struct packet_struct *

p

)

nmblib.c の 988 行で定義されています。

参照先 buf・build_packet()・packet_struct::fd・packet_struct::ip・len・packet_struct::port・send_udp().

参照元 msg_nmbd_send_packet()・name_query()・node_status_query()・reply_netbios_packet()・retransmit_or_expire_response_records()・send_mailslot()・send_netbios_packet().

{
        char buf[1024];
        int len=0;

        memset(buf,'\0',sizeof(buf));

        len = build_packet(buf, p);

        if (!len)
                return(False);

        return(send_udp(p->fd,buf,len,p->ip,p->port));
}

struct packet_struct* receive_packet	(	int	fd,
		enum packet_type	type,
		int	t
	)

nmblib.c の 1008 行で定義されています。

参照先 errno・read_packet()・strerror()・sys_select_intr().

参照元 receive_dgram_packet()・receive_nmb_packet().

{
        fd_set fds;
        struct timeval timeout;
        int ret;

        FD_ZERO(&fds);
        FD_SET(fd,&fds);
        timeout.tv_sec = t/1000;
        timeout.tv_usec = 1000*(t%1000);

        if ((ret = sys_select_intr(fd+1,&fds,NULL,NULL,&timeout)) == -1) {
                /* errno should be EBADF or EINVAL. */
                DEBUG(0,("select returned -1, errno = %s (%d)\n", strerror(errno), errno));
                return NULL;
        }

        if (ret == 0) /* timeout */
                return NULL;

        if (FD_ISSET(fd,&fds)) 
                return(read_packet(fd,type));
        
        return(NULL);
}

struct packet_struct* receive_nmb_packet	(	int	fd,
		int	t,
		int	trn_id
	)

nmblib.c の 1040 行で定義されています。

参照先 free_packet()・nmb_packet::header・nmb_packet::name_trn_id・packet_struct::nmb・NMB_PACKET・packet_struct::packet・receive_packet()・receive_unexpected()・nmb_packet::response.

参照元 name_query()・node_status_query().

{
        struct packet_struct *p;

        p = receive_packet(fd, NMB_PACKET, t);

        if (p && p->packet.nmb.header.response &&
                        p->packet.nmb.header.name_trn_id == trn_id) {
                return p;
        }
        if (p)
                free_packet(p);

        /* try the unexpected packet queue */
        return receive_unexpected(NMB_PACKET, trn_id, NULL);
}

struct packet_struct* receive_dgram_packet	(	int	fd,
		int	t,
		const char *	mailslot_name
	)

nmblib.c の 1063 行で定義されています。

参照先 DGRAM_PACKET・free_packet()・match_mailslot_name()・receive_packet()・receive_unexpected().

{
        struct packet_struct *p;

        p = receive_packet(fd, DGRAM_PACKET, t);

        if (p && match_mailslot_name(p, mailslot_name)) {
                return p;
        }
        if (p)
                free_packet(p);

        /* try the unexpected packet queue */
        return receive_unexpected(DGRAM_PACKET, 0, mailslot_name);
}

BOOL match_mailslot_name	(	struct packet_struct *	p,
		const char *	mailslot_name
	)

nmblib.c の 1083 行で定義されています。

参照先 buf・dgram_packet::data・packet_struct::dgram・packet_struct::packet.

参照元 receive_dgram_packet()・traverse_match().

{
        struct dgram_packet *dgram = &p->packet.dgram;
        char *buf;

        buf = &dgram->data[0];
        buf -= 4;

        buf = smb_buf(buf);

        if (memcmp(buf, mailslot_name, strlen(mailslot_name)+1) == 0) {
                return True;
        }

        return False;
}

int matching_quad_bits	(	unsigned char *	p1,
		unsigned char *	p2
	)

nmblib.c の 1104 行で定義されています。

参照元 ip_compare()・name_query_comp().

{
        int i, j, ret = 0;
        for (i=0; i<4; i++) {
                if (p1[i] != p2[i])
                        break;
                ret += 8;
        }

        if (i==4)
                return ret;

        for (j=0; j<8; j++) {
                if ((p1[i] & (1<<(7-j))) != (p2[i] & (1<<(7-j))))
                        break;
                ret++;
        }       
        
        return ret;
}

static int name_query_comp	(	unsigned char *	p1,
		unsigned char *	p2
	)			[static]

nmblib.c の 1131 行で定義されています。

参照先 matching_quad_bits()・sort_ip.

参照元 sort_query_replies().

{
        return matching_quad_bits(p2+2, sort_ip) - matching_quad_bits(p1+2, sort_ip);
}

void sort_query_replies	(	char *	data,
		int	n,
		struct in_addr	ip
	)

nmblib.c の 1141 行で定義されています。

参照先 name_query_comp()・sort_ip.

参照元 send_wins_name_query_response().

{
        if (n <= 1)
                return;

        putip(sort_ip, (char *)&ip);

        qsort(data, n, 6, QSORT_CAST name_query_comp);
}

char* dns_to_netbios_name

(

const char *

dns_name

)

nmblib.c の 1163 行で定義されています。

参照元 rpcclient_connect().

{
        static nstring netbios_name;
        int i;
        StrnCpy(netbios_name, dns_name, MAX_NETBIOSNAME_LEN-1);
        netbios_name[15] = 0;
        
        /* ok.  this is because of a stupid microsoft-ism.  if the called host
           name contains a '.', microsoft clients expect you to truncate the
           netbios name up to and including the '.'  this even applies, by
           mistake, to workgroup (domain) names, which is _really_ daft.
         */
        for (i = 0; i < 15; i++) {
                if (netbios_name[i] == '.') {
                        netbios_name[i] = 0;
                        break;
                }
        }

        return netbios_name;
}

static int name_interpret	(	char *	in,
		fstring	name
	)			[static]

nmblib.c の 1189 行で定義されています。

参照先 len・pull_ascii_fstring().

参照元 name_extract().

{
        int ret;
        int len = (*in++) / 2;
        fstring out_string;
        char *out = out_string;

        *out=0;

        if (len > 30 || len<1)
                return(0);

        while (len--) {
                if (in[0] < 'A' || in[0] > 'P' || in[1] < 'A' || in[1] > 'P') {
                        *out = 0;
                        return(0);
                }
                *out = ((in[0]-'A')<<4) + (in[1]-'A');
                in += 2;
                out++;
        }
        ret = out[-1];
        out[-1] = 0;

#ifdef NETBIOS_SCOPE
        /* Handle any scope names */
        while(*in) {
                *out++ = '.'; /* Scope names are separated by periods */
                len = *(unsigned char *)in++;
                StrnCpy(out, in, len);
                out += len;
                *out=0;
                in += len;
        }
#endif
        pull_ascii_fstring(name, out_string);

        return(ret);
}

int name_mangle	(	char *	In,
		char *	Out,
		char	name_type
	)

nmblib.c の 1234 行で定義されています。

参照先 buf・global_scope()・len・name_len()・pull_ascii_fstring()・push_ascii_nstring()・put_name()・strupper_m().

参照元 cli_session_request()・filter_request().

{
        int   i;
        int   len;
        nstring buf;
        char *p = Out;

        /* Safely copy the input string, In, into buf[]. */
        if (strcmp(In,"*") == 0)
                put_name(buf, "*", '\0', 0x00);
        else {
                /* We use an fstring here as mb dos names can expend x3 when
                   going to utf8. */
                fstring buf_unix;
                nstring buf_dos;

                pull_ascii_fstring(buf_unix, In);
                strupper_m(buf_unix);

                push_ascii_nstring(buf_dos, buf_unix);
                put_name(buf, buf_dos, ' ', name_type);
        }

        /* Place the length of the first field into the output buffer. */
        p[0] = 32;
        p++;

        /* Now convert the name to the rfc1001/1002 format. */
        for( i = 0; i < MAX_NETBIOSNAME_LEN; i++ ) {
                p[i*2]     = ( (buf[i] >> 4) & 0x000F ) + 'A';
                p[(i*2)+1] = (buf[i] & 0x000F) + 'A';
        }
        p += 32;
        p[0] = '\0';

        /* Add the scope string. */
        for( i = 0, len = 0; *(global_scope()) != '\0'; i++, len++ ) {
                switch( (global_scope())[i] ) {
                        case '\0':
                                p[0] = len;
                                if( len > 0 )
                                        p[len+1] = 0;
                                return( name_len(Out) );
                        case '.':
                                p[0] = len;
                                p   += (len + 1);
                                len  = -1;
                                break;
                        default:
                                p[len+1] = (global_scope())[i];
                                break;
                }
        }

        return( name_len(Out) );
}

static char* name_ptr	(	char *	buf,
		int	ofs
	)			[static]

nmblib.c の 1295 行で定義されています。

参照先 c.

参照元 name_extract().

{
        unsigned char c = *(unsigned char *)(buf+ofs);

        if ((c & 0xC0) == 0xC0) {
                uint16 l = RSVAL(buf, ofs) & 0x3FFF;
                DEBUG(5,("name ptr to pos %d from %d is %s\n",l,ofs,buf+l));
                return(buf + l);
        } else {
                return(buf+ofs);
        }
}  

int name_extract	(	char *	buf,
		int	ofs,
		fstring	name
	)

nmblib.c の 1312 行で定義されています。

参照先 name_interpret()・name_ptr().

参照元 filter_request()・reply_special().

{
        char *p = name_ptr(buf,ofs);
        int d = PTR_DIFF(p,buf+ofs);

        name[0] = '\0';
        if (d < -50 || d > 50)
                return(0);
        return(name_interpret(p,name));
}

int name_len

(

char *

s1

)

nmblib.c の 1327 行で定義されています。

参照先 len.

参照元 cli_session_request()・filter_request()・name_mangle()・reply_special().

{
        /* NOTE: this argument _must_ be unsigned */
        unsigned char *s = (unsigned char *)s1;
        int len;

        /* If the two high bits of the byte are set, return 2. */
        if (0xC0 == (*s & 0xC0))
                return(2);

        /* Add up the length bytes. */
        for (len = 1; (*s); s += (*s) + 1) {
                len += *s + 1;
                SMB_ASSERT(len < 80);
        }

        return(len);
}

---

変数

struct in_addr lastip

util_sock.c の 112 行で定義されています。

参照元 parse_packet()・read_udp_socket().

int lastport

util_sock.c の 115 行で定義されています。

参照元 parse_packet()・read_udp_socket().

int num_good_sends = 0

nmblib.c の 27 行で定義されています。

参照元 send_udp().

int num_good_receives = 0

nmblib.c の 28 行で定義されています。

参照元 read_packet().

struct opcode_names nmb_header_opcode_names[] [static]

参照元 lookup_opcode_name().

unsigned char sort_ip[4] [static]

nmblib.c の 1125 行で定義されています。

参照元 name_query_comp()・sort_query_replies().

---