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author | Gerald Carter <jerry@samba.org> | 2003-09-09 04:07:32 +0000 |
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committer | Gerald Carter <jerry@samba.org> | 2003-09-09 04:07:32 +0000 |
commit | 4093bf7ff8c8861cf7b941945ede53a8ec5bb6c8 (patch) | |
tree | dd0a9f32d9933e1f75d919b5083e007d7453f9c4 /source3/nmbd/nmbd_winsproxy.c | |
parent | 3d7cb49747a9a7f5cdec0ee05c6270ec3604202f (diff) | |
download | samba-4093bf7ff8c8861cf7b941945ede53a8ec5bb6c8.tar.gz samba-4093bf7ff8c8861cf7b941945ede53a8ec5bb6c8.tar.bz2 samba-4093bf7ff8c8861cf7b941945ede53a8ec5bb6c8.zip |
sync 3.0 into HEAD for the last time
(This used to be commit c17a7dc9a190156a069da3e861c18fd3f81224ad)
Diffstat (limited to 'source3/nmbd/nmbd_winsproxy.c')
-rw-r--r-- | source3/nmbd/nmbd_winsproxy.c | 260 |
1 files changed, 126 insertions, 134 deletions
diff --git a/source3/nmbd/nmbd_winsproxy.c b/source3/nmbd/nmbd_winsproxy.c index 2e65ebb612..bace112752 100644 --- a/source3/nmbd/nmbd_winsproxy.c +++ b/source3/nmbd/nmbd_winsproxy.c @@ -30,92 +30,85 @@ static void wins_proxy_name_query_request_success( struct subnet_record *subrec, struct userdata_struct *userdata, struct nmb_name *nmbname, struct in_addr ip, struct res_rec *rrec) { - struct packet_struct *original_packet; - struct subnet_record *orig_broadcast_subnet; - struct name_record *namerec; - uint16 nb_flags; - int num_ips; - int i; - int ttl = 3600; /* By default one hour in the cache. */ - struct in_addr *iplist; - - /* Extract the original packet and the original broadcast subnet from - the userdata. */ - - memcpy( (char *)&orig_broadcast_subnet, userdata->data, sizeof(struct subnet_record *) ); - memcpy( (char *)&original_packet, &userdata->data[sizeof(struct subnet_record *)], - sizeof(struct packet_struct *) ); - - nb_flags = get_nb_flags( rrec->rdata ); - - num_ips = rrec->rdlength / 6; - if(num_ips == 0) - { - DEBUG(0,("wins_proxy_name_query_request_success: Invalid number of IP records (0) \ + nstring name; + struct packet_struct *original_packet; + struct subnet_record *orig_broadcast_subnet; + struct name_record *namerec; + uint16 nb_flags; + int num_ips; + int i; + int ttl = 3600; /* By default one hour in the cache. */ + struct in_addr *iplist; + + /* Extract the original packet and the original broadcast subnet from + the userdata. */ + + memcpy( (char *)&orig_broadcast_subnet, userdata->data, sizeof(struct subnet_record *) ); + memcpy( (char *)&original_packet, &userdata->data[sizeof(struct subnet_record *)], + sizeof(struct packet_struct *) ); + + nb_flags = get_nb_flags( rrec->rdata ); + + num_ips = rrec->rdlength / 6; + if(num_ips == 0) { + DEBUG(0,("wins_proxy_name_query_request_success: Invalid number of IP records (0) \ returned for name %s.\n", nmb_namestr(nmbname) )); - return; - } - - if(num_ips == 1) - iplist = &ip; - else - { - if((iplist = (struct in_addr *)malloc( num_ips * sizeof(struct in_addr) )) == NULL) - { - DEBUG(0,("wins_proxy_name_query_request_success: malloc fail !\n")); - return; - } - - for(i = 0; i < num_ips; i++) - putip( (char *)&iplist[i], (char *)&rrec->rdata[ (i*6) + 2]); - } - - /* Add the queried name to the original subnet as a WINS_PROXY_NAME. */ - - if(rrec == PERMANENT_TTL) - ttl = lp_max_ttl(); - - namerec = add_name_to_subnet( orig_broadcast_subnet, nmbname->name, - nmbname->name_type, nb_flags, ttl, - WINS_PROXY_NAME, num_ips, iplist ); - - if(iplist != &ip) - SAFE_FREE(iplist); - - /* - * Check that none of the IP addresses we are returning is on the - * same broadcast subnet as the original requesting packet. If it - * is then don't reply (although we still need to add the name - * to the cache) as the actual machine will be replying also - * and we don't want two replies to a broadcast query. - */ - - if(namerec && original_packet->packet.nmb.header.nm_flags.bcast) - { - for( i = 0; i < namerec->data.num_ips; i++) - { - if( same_net( namerec->data.ip[i], - orig_broadcast_subnet->myip, - orig_broadcast_subnet->mask_ip ) ) - { - DEBUG( 5, ( "wins_proxy_name_query_request_success: name %s is a WINS \ + return; + } + + if(num_ips == 1) { + iplist = &ip; + } else { + if((iplist = (struct in_addr *)malloc( num_ips * sizeof(struct in_addr) )) == NULL) { + DEBUG(0,("wins_proxy_name_query_request_success: malloc fail !\n")); + return; + } + + for(i = 0; i < num_ips; i++) + putip( (char *)&iplist[i], (char *)&rrec->rdata[ (i*6) + 2]); + } + + /* Add the queried name to the original subnet as a WINS_PROXY_NAME. */ + + if(rrec == PERMANENT_TTL) + ttl = lp_max_ttl(); + + pull_ascii_nstring(name, nmbname->name); + namerec = add_name_to_subnet( orig_broadcast_subnet, name, + nmbname->name_type, nb_flags, ttl, + WINS_PROXY_NAME, num_ips, iplist ); + + if(iplist != &ip) + SAFE_FREE(iplist); + + /* + * Check that none of the IP addresses we are returning is on the + * same broadcast subnet as the original requesting packet. If it + * is then don't reply (although we still need to add the name + * to the cache) as the actual machine will be replying also + * and we don't want two replies to a broadcast query. + */ + + if(namerec && original_packet->packet.nmb.header.nm_flags.bcast) { + for( i = 0; i < namerec->data.num_ips; i++) { + if( same_net( namerec->data.ip[i], orig_broadcast_subnet->myip, + orig_broadcast_subnet->mask_ip ) ) { + DEBUG( 5, ( "wins_proxy_name_query_request_success: name %s is a WINS \ proxy name and is also on the same subnet (%s) as the requestor. \ -Not replying.\n", - nmb_namestr(&namerec->name), - orig_broadcast_subnet->subnet_name ) ); - return; - } - } - } - - /* Finally reply to the original name query. */ - reply_netbios_packet(original_packet, /* Packet to reply to. */ - 0, /* Result code. */ - NMB_QUERY, /* nmbd type code. */ - NMB_NAME_QUERY_OPCODE, /* opcode. */ - ttl, /* ttl. */ - rrec->rdata, /* data to send. */ - rrec->rdlength); /* data length. */ +Not replying.\n", nmb_namestr(&namerec->name), orig_broadcast_subnet->subnet_name ) ); + return; + } + } + } + + /* Finally reply to the original name query. */ + reply_netbios_packet(original_packet, /* Packet to reply to. */ + 0, /* Result code. */ + NMB_QUERY, /* nmbd type code. */ + NMB_NAME_QUERY_OPCODE, /* opcode. */ + ttl, /* ttl. */ + rrec->rdata, /* data to send. */ + rrec->rdlength); /* data length. */ } /**************************************************************************** @@ -126,7 +119,7 @@ static void wins_proxy_name_query_request_fail(struct subnet_record *subrec, struct response_record *rrec, struct nmb_name *question_name, int fail_code) { - DEBUG(4,("wins_proxy_name_query_request_fail: WINS server returned error code %d for lookup \ + DEBUG(4,("wins_proxy_name_query_request_fail: WINS server returned error code %d for lookup \ of name %s.\n", fail_code, nmb_namestr(question_name) )); } @@ -137,38 +130,35 @@ proxy query returns. static struct userdata_struct *wins_proxy_userdata_copy_fn(struct userdata_struct *userdata) { - struct packet_struct *p, *copy_of_p; - struct userdata_struct *new_userdata = - (struct userdata_struct *)malloc( userdata->userdata_len ); + struct packet_struct *p, *copy_of_p; + struct userdata_struct *new_userdata = (struct userdata_struct *)malloc( userdata->userdata_len ); - if(new_userdata == NULL) - return NULL; + if(new_userdata == NULL) + return NULL; - new_userdata->copy_fn = userdata->copy_fn; - new_userdata->free_fn = userdata->free_fn; - new_userdata->userdata_len = userdata->userdata_len; + new_userdata->copy_fn = userdata->copy_fn; + new_userdata->free_fn = userdata->free_fn; + new_userdata->userdata_len = userdata->userdata_len; - /* Copy the subnet_record pointer. */ - memcpy( new_userdata->data, userdata->data, sizeof(struct subnet_record *) ); + /* Copy the subnet_record pointer. */ + memcpy( new_userdata->data, userdata->data, sizeof(struct subnet_record *) ); - /* Extract the pointer to the packet struct */ - memcpy((char *)&p, &userdata->data[sizeof(struct subnet_record *)], - sizeof(struct packet_struct *) ); + /* Extract the pointer to the packet struct */ + memcpy((char *)&p, &userdata->data[sizeof(struct subnet_record *)], sizeof(struct packet_struct *) ); - /* Do a deep copy of the packet. */ - if((copy_of_p = copy_packet(p)) == NULL) - { - SAFE_FREE(new_userdata); - return NULL; - } + /* Do a deep copy of the packet. */ + if((copy_of_p = copy_packet(p)) == NULL) { + SAFE_FREE(new_userdata); + return NULL; + } - /* Lock the copy. */ - copy_of_p->locked = True; + /* Lock the copy. */ + copy_of_p->locked = True; - memcpy( &new_userdata->data[sizeof(struct subnet_record *)], (char *)©_of_p, - sizeof(struct packet_struct *) ); + memcpy( &new_userdata->data[sizeof(struct subnet_record *)], (char *)©_of_p, + sizeof(struct packet_struct *) ); - return new_userdata; + return new_userdata; } /**************************************************************************** @@ -178,18 +168,18 @@ proxy query returned. static void wins_proxy_userdata_free_fn(struct userdata_struct *userdata) { - struct packet_struct *p; + struct packet_struct *p; - /* Extract the pointer to the packet struct */ - memcpy((char *)&p, &userdata->data[sizeof(struct subnet_record *)], - sizeof(struct packet_struct *)); + /* Extract the pointer to the packet struct */ + memcpy((char *)&p, &userdata->data[sizeof(struct subnet_record *)], + sizeof(struct packet_struct *)); - /* Unlock the packet. */ - p->locked = False; + /* Unlock the packet. */ + p->locked = False; - free_packet(p); - ZERO_STRUCTP(userdata); - SAFE_FREE(userdata); + free_packet(p); + ZERO_STRUCTP(userdata); + SAFE_FREE(userdata); } /**************************************************************************** @@ -200,22 +190,24 @@ void make_wins_proxy_name_query_request( struct subnet_record *subrec, struct packet_struct *incoming_packet, struct nmb_name *question_name) { - long *ud[(sizeof(struct userdata_struct) + sizeof(struct subrec *) + - sizeof(struct packet_struct *))/sizeof(long *) + 1]; - struct userdata_struct *userdata = (struct userdata_struct *)ud; + long *ud[(sizeof(struct userdata_struct) + sizeof(struct subrec *) + + sizeof(struct packet_struct *))/sizeof(long *) + 1]; + struct userdata_struct *userdata = (struct userdata_struct *)ud; + nstring qname; - memset(ud, '\0', sizeof(ud)); + memset(ud, '\0', sizeof(ud)); - userdata->copy_fn = wins_proxy_userdata_copy_fn; - userdata->free_fn = wins_proxy_userdata_free_fn; - userdata->userdata_len = sizeof(ud); - memcpy( userdata->data, (char *)&subrec, sizeof(struct subnet_record *)); - memcpy( &userdata->data[sizeof(struct subnet_record *)], (char *)&incoming_packet, - sizeof(struct packet_struct *)); - - /* Now use the unicast subnet to query the name with the WINS server. */ - query_name( unicast_subnet, question_name->name, question_name->name_type, - wins_proxy_name_query_request_success, - wins_proxy_name_query_request_fail, - userdata); + userdata->copy_fn = wins_proxy_userdata_copy_fn; + userdata->free_fn = wins_proxy_userdata_free_fn; + userdata->userdata_len = sizeof(ud); + memcpy( userdata->data, (char *)&subrec, sizeof(struct subnet_record *)); + memcpy( &userdata->data[sizeof(struct subnet_record *)], (char *)&incoming_packet, + sizeof(struct packet_struct *)); + + /* Now use the unicast subnet to query the name with the WINS server. */ + pull_ascii_nstring(qname, question_name->name); + query_name( unicast_subnet, qname, question_name->name_type, + wins_proxy_name_query_request_success, + wins_proxy_name_query_request_fail, + userdata); } |