diff options
Diffstat (limited to 'source/nameresp.c')
| -rw-r--r-- | source/nameresp.c | 324 |
1 files changed, 0 insertions, 324 deletions
diff --git a/source/nameresp.c b/source/nameresp.c deleted file mode 100644 index f44171f4b67..00000000000 --- a/source/nameresp.c +++ /dev/null @@ -1,324 +0,0 @@ -/* - Unix SMB/Netbios implementation. - Version 1.9. - NBT netbios library routines - Copyright (C) Andrew Tridgell 1994-1997 - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - - Module name: nameresp.c - -*/ - -#include "includes.h" - -extern int ClientNMB; -extern int ClientDGRAM; - -extern struct subnet_record *subnetlist; - -extern int DEBUGLEVEL; - -extern pstring scope; -extern struct in_addr ipzero; -extern struct in_addr wins_ip; - - -/*************************************************************************** - deals with an entry before it dies - **************************************************************************/ -static void dead_netbios_entry(struct subnet_record *d, - struct response_record *n) -{ - DEBUG(3,("Removing dead netbios entry for %s %s (num_msgs=%d)\n", - inet_ntoa(n->send_ip), namestr(&n->name), n->num_msgs)); - - debug_state_type(n->state); - - switch (n->state) - { - case NAME_QUERY_CONFIRM: - { - if (!lp_wins_support()) return; /* only if we're a WINS server */ - - if (n->num_msgs == 0) - { - /* oops. name query had no response. check that the name is - unique and then remove it from our WINS database */ - - /* IMPORTANT: see query_refresh_names() */ - - if ((!NAME_GROUP(n->nb_flags))) - { - struct subnet_record *d1 = wins_subnet; - if (d1) - { - /* remove the name that had been registered with us, - and we're now getting no response when challenging. - see rfc1001.txt 15.5.2 - */ - remove_netbios_name(d1, n->name.name, n->name.name_type, - REGISTER, n->send_ip); - } - } - } - break; - } - - case NAME_QUERY_MST_CHK: - { - /* if no response received, the master browser must have gone - down on that subnet, without telling anyone. */ - - /* IMPORTANT: see response_netbios_packet() */ - - if (n->num_msgs == 0) - browser_gone(n->name.name, n->send_ip); - break; - } - - case NAME_RELEASE: - { - /* if no response received, it must be OK for us to release the - name. nobody objected (including a potentially dead or deaf - WINS server) */ - - /* IMPORTANT: see response_name_release() */ - - if (ismyip(n->send_ip)) - { - name_unregister_work(d,n->name.name,n->name.name_type); - } - if (!n->bcast && n->num_msgs == 0) - { - DEBUG(0,("WINS server did not respond to name release!\n")); - /* XXXX whoops. we have problems. must deal with this */ - } - break; - } - - case NAME_REGISTER_CHALLENGE: - { - /* name challenge: no reply. we can reply to the person that - wanted the unique name and tell them that they can have it - */ - - add_name_respond(d,n->fd,d->myip, n->response_id ,&n->name, - n->nb_flags, GET_TTL(0), - n->reply_to_ip, True, n->reply_to_ip); - - if (!n->bcast && n->num_msgs == 0) - { - DEBUG(1,("WINS server did not respond to name registration!\n")); - /* XXXX whoops. we have problems. must deal with this */ - } - break; - } - - case NAME_REGISTER: - { - /* if no response received, and we are using a broadcast registration - method, it must be OK for us to register the name: nobody objected - on that subnet. if we are using a WINS server, then the WINS - server must be dead or deaf. - */ - if (n->num_msgs == 0) - { - if (n->bcast) - { - /* broadcast method: implicit acceptance of the name registration - by not receiving any objections. */ - - /* IMPORTANT: see response_name_reg() */ - - name_register_work(d,n->name.name,n->name.name_type, - n->nb_flags, n->ttl, n->reply_to_ip, n->bcast); - } - else - { - /* received no response. rfc1001.txt states that after retrying, - we should assume the WINS server is dead, and fall back to - broadcasting (see bits about M nodes: can't find any right - now) */ - - DEBUG(1,("WINS server did not respond to name registration!\n")); - /* XXXX whoops. we have problems. must deal with this */ - } - } - break; - } - - case NAME_QUERY_DOMAIN: - { - /* if no response was received, there is no domain controller for - this DOMAIN registered within WINS. it's ok for us to register - the DOMAIN<1b> name. - */ - - if (n->num_msgs == 0) - { - struct work_record *work = find_workgroupstruct(d,n->name.name,False); - if (work && d) - { - become_domain_master(d,work); - } - } - else - { - DEBUG(1, ("nmbd configured as domain master and one already exists\n")); - } - break; - } - - default: - { - /* nothing to do but delete the dead expected-response structure */ - /* this is normal. */ - break; - } - } -} - - -/******************************************************************* - remove old name response entries - - XXXX retry code needs to be added, including a retry wait period and a count - see name_query() and name_status() for suggested implementation. - - ******************************************************************/ -void expire_netbios_response_entries(time_t t) -{ - struct subnet_record *d; - - for (d = FIRST_SUBNET; d; d = NEXT_SUBNET_INCLUDING_WINS(d)) - { - struct response_record *n, *nextn; - - for (n = d->responselist; n; n = nextn) - { - nextn = n->next; - - if (n->repeat_time <= t) - { - if (n->repeat_count > 0) - { - /* resend the entry */ - initiate_netbios_packet(&n->response_id, n->fd, n->quest_type, - n->name.name, n->name.name_type, - n->nb_flags, n->bcast, n->recurse, n->send_ip); - - n->repeat_time += n->repeat_interval; /* XXXX ms needed */ - n->repeat_count--; - - } - else - { - DEBUG(4,("timeout response %d for %s %s\n", - n->response_id, namestr(&n->name), - inet_ntoa(n->send_ip))); - - dead_netbios_entry(d,n); /* process the non-response */ - remove_response_record(d,n); /* remove the non-response */ - - continue; - } - } - } - } -} - - -/**************************************************************************** - wrapper function to override a broadcast message and send it to the WINS - name server instead, if it exists. if wins is false, and there has been no - WINS server specified, the packet will NOT be sent. - ****************************************************************************/ -struct response_record *queue_netbios_pkt_wins( - int fd,int quest_type,enum state_type state, - char *name,int name_type,int nb_flags, time_t ttl, - int server_type, char *my_name, char *my_comment, - struct in_addr send_ip, struct in_addr reply_to_ip) -{ - /* XXXX note: please see rfc1001.txt section 10 for details on this - function: it is currently inappropriate to use this - it will do - for now - once there is a clarification of B, M and P nodes and - which one samba is supposed to be - */ - - if ((!lp_wins_support()) && (*lp_wins_server())) - { - /* samba is not a WINS server, and we are using a WINS server */ - struct in_addr real_wins_ip; - real_wins_ip = *interpret_addr2(lp_wins_server()); - - if (!zero_ip(real_wins_ip)) - { - send_ip = real_wins_ip; - } - else - { - /* oops. smb.conf's wins server parameter MUST be a host_name - or an ip_address. */ - DEBUG(0,("invalid smb.conf parameter 'wins server'\n")); - } - } - - if (zero_ip(send_ip)) return NULL; - - return queue_netbios_packet(wins_subnet,fd, quest_type, state, - name, name_type, nb_flags, ttl, - server_type,my_name,my_comment, - False, True, send_ip, reply_to_ip); -} - - -/**************************************************************************** - initiate a netbios name query to find someone's or someones' IP - this is intended to be used (not exclusively) for broadcasting to - master browsers (WORKGROUP(1d or 1b) or __MSBROWSE__(1)) to get - complete lists across a wide area network - ****************************************************************************/ -struct response_record *queue_netbios_packet(struct subnet_record *d, - int fd,int quest_type,enum state_type state,char *name, - int name_type,int nb_flags, time_t ttl, - int server_type, char *my_name, char *my_comment, - BOOL bcast,BOOL recurse, - struct in_addr send_ip, struct in_addr reply_to_ip) -{ - struct response_record *n; - uint16 id = 0xffff; - - /* ha ha. no. do NOT broadcast to 255.255.255.255: it's a pseudo address */ - if (ip_equal(wins_ip, send_ip)) return NULL; - - initiate_netbios_packet(&id, fd, quest_type, name, name_type, - nb_flags, bcast, recurse, send_ip); - - if (id == 0xffff) { - DEBUG(4,("did not initiate netbios packet: %s\n", inet_ntoa(send_ip))); - return NULL; - } - - if ((n = make_response_queue_record(state,id,fd, - quest_type,name,name_type,nb_flags,ttl, - server_type,my_name, my_comment, - bcast,recurse,send_ip,reply_to_ip))) - { - add_response_record(d,n); - return n; - } - return NULL; -} |