diff options
Diffstat (limited to 'source3/nmbd/nmbd_namelistdb.c')
| -rw-r--r-- | source3/nmbd/nmbd_namelistdb.c | 357 |
1 files changed, 190 insertions, 167 deletions
diff --git a/source3/nmbd/nmbd_namelistdb.c b/source3/nmbd/nmbd_namelistdb.c index f9a348eeea..4454cdfed0 100644 --- a/source3/nmbd/nmbd_namelistdb.c +++ b/source3/nmbd/nmbd_namelistdb.c @@ -32,215 +32,233 @@ extern char **my_netbios_names; uint16 samba_nb_type = 0; /* samba's NetBIOS name type */ -/**************************************************************************** - Set Samba's NetBIOS name type. - ****************************************************************************/ - +/* ************************************************************************** ** + * Set Samba's NetBIOS name type. + * ************************************************************************** ** + */ void set_samba_nb_type(void) -{ + { if( lp_wins_support() || (*lp_wins_server()) ) - samba_nb_type = NB_MFLAG; /* samba is a 'hybrid' node type */ + samba_nb_type = NB_MFLAG; /* samba is a 'hybrid' node type. */ else - samba_nb_type = NB_BFLAG; /* samba is broadcast-only node type */ -} - -/**************************************************************************** - Returns True if the netbios name is ^1^2__MSBROWSE__^2^1. - - Note: This name is registered if as a master browser or backup browser - you are responsible for a workgroup (when you announce a domain by - broadcasting on your local subnet, you announce it as coming from this - name: see announce_host()). - - **************************************************************************/ - + samba_nb_type = NB_BFLAG; /* samba is broadcast-only node type. */ + } /* set_samba_nb_type */ + +/* ************************************************************************** ** + * Returns True if the netbios name is ^1^2__MSBROWSE__^2^1. + * + * Note: This name is registered if as a master browser or backup browser + * you are responsible for a workgroup (when you announce a domain by + * broadcasting on your local subnet, you announce it as coming from this + * name: see announce_host()). + * + * ************************************************************************** ** + */ BOOL ms_browser_name( char *name, int type ) -{ + { return( strequal( name, MSBROWSE ) && (type == 0x01) ); -} - -/**************************************************************************** - Add a netbios name into a namelist. - **************************************************************************/ - -static void add_name_to_namelist(struct subnet_record *subrec, - struct name_record *namerec) -{ - struct name_record *namerec2; + } /* ms_browser_name */ - if (!subrec->namelist) +/* ************************************************************************** ** + * Convert a NetBIOS name to upper case. + * ************************************************************************** ** + */ +static void upcase_name( struct nmb_name *target, struct nmb_name *source ) { - subrec->namelist = namerec; - namerec->prev = NULL; - namerec->next = NULL; - return; - } - - for( namerec2 = subrec->namelist; namerec2->next; namerec2 = namerec2->next ) - ; - - namerec2->next = namerec; - namerec->next = NULL; - namerec->prev = namerec2; - namerec->subnet = subrec; + int i; - subrec->namelist_changed = True; -} + if( NULL != source ) + (void)memcpy( target, source, sizeof( struct nmb_name ) ); + + strupper( target->name ); + strupper( target->scope ); + + /* fudge... We're using a byte-by-byte compare, so we must be sure that + * unused space doesn't have garbage in it. + */ + for( i = strlen( target->name ); i < sizeof( target->name ); i++ ) + target->name[i] = '\0'; + for( i = strlen( target->scope ); i < sizeof( target->scope ); i++ ) + target->scope[i] = '\0'; + } /* upcase_name */ + +/* ************************************************************************** ** + * Add a new or overwrite an existing namelist entry. + * ************************************************************************** ** + */ +void update_name_in_namelist( struct subnet_record *subrec, + struct name_record *namerec ) + { + struct name_record *oldrec = NULL; -/**************************************************************************** - Remove a name from the namelist. - **************************************************************************/ + (void)ubi_trInsert( subrec->namelist, namerec, &(namerec->name), &oldrec ); + if( oldrec ) + { + if( oldrec->data.ip ) + free( oldrec->data.ip ); + free( oldrec ); + } + } /* update_name_in_namelist */ +/* ************************************************************************** ** + * Remove a name from the namelist. + * ************************************************************************** ** + */ void remove_name_from_namelist( struct subnet_record *subrec, - struct name_record *namerec ) -{ - if (namerec->next) - namerec->next->prev = namerec->prev; - if (namerec->prev) - namerec->prev->next = namerec->next; - - if(namerec == subrec->namelist) - subrec->namelist = namerec->next; + struct name_record *namerec ) + { + (void)ubi_trRemove( subrec->namelist, namerec ); if(namerec->data.ip != NULL) free((char *)namerec->data.ip); free((char *)namerec); subrec->namelist_changed = True; -} - - -/**************************************************************************** - Find a name in a subnet. - **************************************************************************/ - -struct name_record *find_name_on_subnet(struct subnet_record *subrec, - struct nmb_name *nmbname, BOOL self_only) -{ - struct name_record *namerec = subrec->namelist; - struct name_record *name_ret; - - for (name_ret = namerec; name_ret; name_ret = name_ret->next) + } /* remove_name_from_namelist */ + +/* ************************************************************************** ** + * Find a name in a subnet. + * ************************************************************************** ** + */ +struct name_record *find_name_on_subnet( struct subnet_record *subrec, + struct nmb_name *nmbname, + BOOL self_only ) { - if (nmb_name_equal(&name_ret->name, nmbname)) + struct nmb_name uc_name[1]; + struct name_record *name_ret; + + upcase_name( uc_name, nmbname ); + name_ret = (struct name_record *)ubi_trFind( subrec->namelist, uc_name ); + if( name_ret ) { - /* Self names only - these include permanent names. */ - if (self_only && (name_ret->data.source != SELF_NAME) && - (name_ret->data.source != PERMANENT_NAME) ) + /* Self names only - these include permanent names. */ + if( self_only + && (name_ret->data.source != SELF_NAME) + && (name_ret->data.source != PERMANENT_NAME) ) { - continue; + DEBUG( 9, + ( "find_name_on_subnet: on subnet %s - self name %s NOT FOUND\n", + subrec->subnet_name, namestr(nmbname) ) ); + return( NULL ); } - DEBUG(9,("find_name_on_subnet: on subnet %s - found name %s source=%d\n", - subrec->subnet_name, namestr(nmbname), name_ret->data.source)); - return name_ret; + DEBUG( 9, ("find_name_on_subnet: on subnet %s - found name %s source=%d\n", + subrec->subnet_name, namestr(nmbname), name_ret->data.source) ); + return( name_ret ); } - } - DEBUG(9,("find_name_on_subnet: on subnet %s - name %s NOT FOUND\n", - subrec->subnet_name, namestr(nmbname))); - return NULL; -} - -/**************************************************************************** - Find a name over all known broadcast subnets. -**************************************************************************/ - -struct name_record *find_name_for_remote_broadcast_subnet( struct nmb_name *nmbname, - BOOL self_only ) -{ + DEBUG( 9, + ( "find_name_on_subnet: on subnet %s - name %s NOT FOUND\n", + subrec->subnet_name, namestr(nmbname) ) ); + return( NULL ); + } /* find_name_on_subnet */ + +/* ************************************************************************** ** + * Find a name over all known broadcast subnets. + * ************************************************************************** ** + */ +struct name_record *find_name_for_remote_broadcast_subnet( + struct nmb_name *nmbname, + BOOL self_only ) + { struct subnet_record *subrec; - struct name_record *namerec = NULL; + struct name_record *namerec = NULL; for( subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec) ) - { + { if( NULL != (namerec = find_name_on_subnet(subrec, nmbname, self_only)) ) break; - } + } - return namerec; -} + return( namerec ); + } /* find_name_for_remote_broadcast_subnet */ -/**************************************************************************** - Update the ttl of an entry in a subnet name list. - ****************************************************************************/ - +/* ************************************************************************** ** + * Update the ttl of an entry in a subnet name list. + * ************************************************************************** ** + */ void update_name_ttl( struct name_record *namerec, int ttl ) { time_t time_now = time(NULL); - if(namerec->data.death_time != PERMANENT_TTL) + if( namerec->data.death_time != PERMANENT_TTL ) namerec->data.death_time = time_now + ttl; namerec->data.refresh_time = time_now + (ttl/2); namerec->subnet->namelist_changed = True; -} - -/**************************************************************************** - Add an entry to a subnet name list. - ****************************************************************************/ - -struct name_record *add_name_to_subnet(struct subnet_record *subrec, - char *name, int type, uint16 nb_flags, int ttl, - enum name_source source, int num_ips, struct in_addr *iplist) +} /* update_name_ttl */ + +/* ************************************************************************** ** + * Add an entry to a subnet name list. + * ************************************************************************** ** + */ +struct name_record *add_name_to_subnet( struct subnet_record *subrec, + char *name, + int type, + uint16 nb_flags, + int ttl, + enum name_source source, + int num_ips, + struct in_addr *iplist) { struct name_record *namerec; time_t time_now = time(NULL); - if((namerec = (struct name_record *)malloc(sizeof(*namerec))) == NULL) + namerec = (struct name_record *)malloc( sizeof(*namerec) ); + if( NULL == namerec ) { - DEBUG(0,("add_name_to_subnet: malloc fail.\n")); - return NULL; + DEBUG( 0, ( "add_name_to_subnet: malloc fail.\n" ) ); + return( NULL ); } - bzero((char *)namerec,sizeof(*namerec)); - - namerec->subnet = subrec; - - namerec->data.num_ips = num_ips; + bzero( (char *)namerec, sizeof(*namerec) ); namerec->data.ip = (struct in_addr *)malloc( sizeof(struct in_addr) - * namerec->data.num_ips ); - if (!namerec->data.ip) + * num_ips ); + if( NULL == namerec->data.ip ) { - DEBUG(0,("add_name_to_subnet: malloc fail when creating ip_flgs.\n")); - free((char *)namerec); + DEBUG( 0, ( "add_name_to_subnet: malloc fail when creating ip_flgs.\n" ) ); + free( (char *)namerec ); return NULL; } - bzero( (char *)namerec->data.ip, - sizeof(struct in_addr) * namerec->data.num_ips ); - - memcpy( &namerec->data.ip[0], iplist, num_ips * sizeof(struct in_addr) ); + namerec->subnet = subrec; make_nmb_name( &namerec->name, name, type, scope ); - - /* Setup the death_time and refresh_time. */ - if(ttl == PERMANENT_TTL) - namerec->data.death_time = PERMANENT_TTL; - else - namerec->data.death_time = time_now + ttl; - - namerec->data.refresh_time = time_now + (ttl/2); + upcase_name( &namerec->name, NULL ); /* Enter the name as active. */ namerec->data.nb_flags = nb_flags | NB_ACTIVE; /* If it's our primary name, flag it as so. */ - if(strequal(my_netbios_names[0],name)) + if( strequal( my_netbios_names[0], name ) ) namerec->data.nb_flags |= NB_PERM; + /* Copy the IPs. */ + namerec->data.num_ips = num_ips; + memcpy( (namerec->data.ip), iplist, num_ips * sizeof(struct in_addr) ); + + /* Data source. */ namerec->data.source = source; - - add_name_to_namelist(subrec,namerec); + + /* Setup the death_time and refresh_time. */ + if( ttl == PERMANENT_TTL ) + namerec->data.death_time = PERMANENT_TTL; + else + namerec->data.death_time = time_now + ttl; + + namerec->data.refresh_time = time_now + (ttl/2); + + /* Now add the record to the name list. */ + update_name_in_namelist( subrec, namerec ); DEBUG( 3, ( "add_name_to_subnet: Added netbios name %s with first IP %s \ ttl=%d nb_flags=%2x to subnet %s\n", - namestr(&namerec->name), - inet_ntoa(*iplist), + namestr( &namerec->name ), + inet_ntoa( *iplist ), ttl, (unsigned int)nb_flags, - subrec->subnet_name) ); + subrec->subnet_name ) ); subrec->namelist_changed = True; @@ -324,12 +342,12 @@ BOOL find_ip_in_name_record( struct name_record *namerec, struct in_addr ip ) Utility function to add an IP address to a name record. ******************************************************************/ -void add_ip_to_name_record(struct name_record *namerec, struct in_addr new_ip) +void add_ip_to_name_record( struct name_record *namerec, struct in_addr new_ip ) { struct in_addr *new_list; /* Don't add one we already have. */ - if(find_ip_in_name_record( namerec, new_ip)) + if( find_ip_in_name_record( namerec, new_ip ) ) return; new_list = (struct in_addr *)malloc( (namerec->data.num_ips + 1) @@ -422,13 +440,15 @@ void expire_names_on_subnet(struct subnet_record *subrec, time_t t) struct name_record *namerec; struct name_record *next_namerec; - for (namerec = subrec->namelist; namerec; namerec = next_namerec) + for( namerec = (struct name_record *)ubi_trFirst( subrec->namelist ); + namerec; + namerec = next_namerec ) { - next_namerec = namerec->next; + next_namerec = (struct name_record *)ubi_trNext( namerec ); if( (namerec->data.death_time != PERMANENT_TTL) && (namerec->data.death_time < t) ) { - if (namerec->data.source == SELF_NAME) + if( namerec->data.source == SELF_NAME ) { DEBUG( 3, ( "expire_names_on_subnet: Subnet %s not expiring SELF \ name %s\n", @@ -440,7 +460,7 @@ name %s\n", DEBUG(3,("expire_names_on_subnet: Subnet %s - removing expired name %s\n", subrec->subnet_name, namestr(&namerec->name))); - remove_name_from_namelist(subrec, namerec); + remove_name_from_namelist( subrec, namerec ); } } } @@ -477,8 +497,9 @@ void add_samba_names_to_subnet( struct subnet_record *subrec ) /* These names are added permanently (ttl of zero) and will NOT be refreshed. */ - if((subrec == unicast_subnet) || (subrec == wins_server_subnet) || - (subrec == remote_broadcast_subnet) ) + if( (subrec == unicast_subnet) + || (subrec == wins_server_subnet) + || (subrec == remote_broadcast_subnet) ) { struct subnet_record *bcast_subrecs; int i; @@ -499,14 +520,14 @@ void add_samba_names_to_subnet( struct subnet_record *subrec ) } - add_name_to_subnet(subrec,"*",0x0,samba_nb_type, PERMANENT_TTL, - PERMANENT_NAME, num_ips, iplist); - add_name_to_subnet(subrec,"*",0x20,samba_nb_type,PERMANENT_TTL, - PERMANENT_NAME, num_ips, iplist); - add_name_to_subnet(subrec,"__SAMBA__",0x20,samba_nb_type,PERMANENT_TTL, - PERMANENT_NAME, num_ips, iplist); - add_name_to_subnet(subrec,"__SAMBA__",0x00,samba_nb_type,PERMANENT_TTL, - PERMANENT_NAME, num_ips, iplist); + (void)add_name_to_subnet(subrec,"*",0x0,samba_nb_type, PERMANENT_TTL, + PERMANENT_NAME, num_ips, iplist); + (void)add_name_to_subnet(subrec,"*",0x20,samba_nb_type,PERMANENT_TTL, + PERMANENT_NAME, num_ips, iplist); + (void)add_name_to_subnet(subrec,"__SAMBA__",0x20,samba_nb_type,PERMANENT_TTL, + PERMANENT_NAME, num_ips, iplist); + (void)add_name_to_subnet(subrec,"__SAMBA__",0x00,samba_nb_type,PERMANENT_TTL, + PERMANENT_NAME, num_ips, iplist); if(iplist != &subrec->myip) free((char *)iplist); @@ -525,7 +546,9 @@ static void dump_subnet_namelist( struct subnet_record *subrec, FILE *fp) int i; fprintf(fp, "Subnet %s\n----------------------\n", subrec->subnet_name); - for (namerec = subrec->namelist; namerec; namerec = namerec->next) + for( namerec = (struct name_record *)ubi_trFirst( subrec->namelist ); + namerec; + namerec = (struct name_record *)ubi_trNext( namerec ) ) { fprintf(fp,"\tName = %s\t", namestr(&namerec->name)); switch(namerec->data.source) @@ -609,15 +632,15 @@ void dump_all_namelists(void) for( subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_INCLUDING_UNICAST(subrec) ) - dump_subnet_namelist( subrec, fp); + dump_subnet_namelist( subrec, fp ); - if(!we_are_a_wins_client()) - dump_subnet_namelist(unicast_subnet, fp); + if( !we_are_a_wins_client() ) + dump_subnet_namelist( unicast_subnet, fp ); - if(remote_broadcast_subnet->namelist != NULL) - dump_subnet_namelist(remote_broadcast_subnet, fp); + if( remote_broadcast_subnet->namelist != NULL ) + dump_subnet_namelist( remote_broadcast_subnet, fp ); - if(wins_server_subnet != NULL) - dump_subnet_namelist( wins_server_subnet, fp); - fclose(fp); + if( wins_server_subnet != NULL ) + dump_subnet_namelist( wins_server_subnet, fp ); + fclose( fp ); } |