diff options
Diffstat (limited to 'source3/nmbd/nmbd_incomingdgrams.c')
| -rw-r--r-- | source3/nmbd/nmbd_incomingdgrams.c | 1086 |
1 files changed, 534 insertions, 552 deletions
diff --git a/source3/nmbd/nmbd_incomingdgrams.c b/source3/nmbd/nmbd_incomingdgrams.c index 80465ada0d..f646e39716 100644 --- a/source3/nmbd/nmbd_incomingdgrams.c +++ b/source3/nmbd/nmbd_incomingdgrams.c @@ -95,102 +95,99 @@ void tell_become_backup(void) void process_host_announce(struct subnet_record *subrec, struct packet_struct *p, char *buf) { - struct dgram_packet *dgram = &p->packet.dgram; - int ttl = IVAL(buf,1)/1000; - char *announce_name = buf+5; - uint32 servertype = IVAL(buf,23); - char *comment = buf+31; - struct work_record *work; - struct server_record *servrec; - const char *work_name; - char *source_name = dgram->source_name.name; - - START_PROFILE(host_announce); - comment[43] = 0; + struct dgram_packet *dgram = &p->packet.dgram; + int ttl = IVAL(buf,1)/1000; + nstring announce_name; + uint32 servertype = IVAL(buf,23); + fstring comment; + struct work_record *work; + struct server_record *servrec; + nstring work_name; + nstring source_name; + + START_PROFILE(host_announce); + + pull_ascii_fstring(comment, buf+31); + comment[42] = 0; - DEBUG(3,("process_host_announce: from %s<%02x> IP %s to \ + pull_ascii_nstring(announce_name, buf+5); + pull_ascii_nstring(source_name, dgram->source_name.name); + + DEBUG(3,("process_host_announce: from %s<%02x> IP %s to \ %s for server %s.\n", source_name, source_name[15], inet_ntoa(p->ip), - nmb_namestr(&dgram->dest_name),announce_name)); + nmb_namestr(&dgram->dest_name),announce_name)); - DEBUG(5,("process_host_announce: ttl=%d server type=%08x comment=%s\n", - ttl, servertype,comment)); + DEBUG(5,("process_host_announce: ttl=%d server type=%08x comment=%s\n", + ttl, servertype,comment)); - /* Filter servertype to remove impossible bits. */ - servertype &= ~(SV_TYPE_LOCAL_LIST_ONLY|SV_TYPE_DOMAIN_ENUM); + /* Filter servertype to remove impossible bits. */ + servertype &= ~(SV_TYPE_LOCAL_LIST_ONLY|SV_TYPE_DOMAIN_ENUM); - /* A host announcement must be sent to the name WORKGROUP<1d>. */ - if(dgram->dest_name.name_type != 0x1d) - { - DEBUG(2,("process_host_announce: incorrect name type for destination from IP %s \ + /* A host announcement must be sent to the name WORKGROUP<1d>. */ + if(dgram->dest_name.name_type != 0x1d) { + DEBUG(2,("process_host_announce: incorrect name type for destination from IP %s \ (was %02x) should be 0x1d. Allowing packet anyway.\n", - inet_ntoa(p->ip), dgram->dest_name.name_type)); - /* Change it so it was. */ - dgram->dest_name.name_type = 0x1d; - } - - /* For a host announce the workgroup name is the destination name. */ - work_name = dgram->dest_name.name; - - /* - * Syntax servers version 5.1 send HostAnnounce packets to - * *THE WRONG NAME*. They send to LOCAL_MASTER_BROWSER_NAME<00> - * instead of WORKGROUP<1d> name. So to fix this we check if - * the workgroup name is our own name, and if so change it - * to be our primary workgroup name. - */ - - if(strequal(work_name, global_myname())) - work_name = lp_workgroup(); - - /* - * We are being very agressive here in adding a workgroup - * name on the basis of a host announcing itself as being - * in that workgroup. Maybe we should wait for the workgroup - * announce instead ? JRA. - */ - - work = find_workgroup_on_subnet(subrec, work_name); - - if(servertype != 0) - { - if (work ==NULL ) - { - /* We have no record of this workgroup. Add it. */ - if((work = create_workgroup_on_subnet(subrec, work_name, ttl))==NULL) - goto done; - } + inet_ntoa(p->ip), dgram->dest_name.name_type)); + /* Change it so it was. */ + dgram->dest_name.name_type = 0x1d; + } + + /* For a host announce the workgroup name is the destination name. */ + pull_ascii_nstring(work_name, dgram->dest_name.name); + + /* + * Syntax servers version 5.1 send HostAnnounce packets to + * *THE WRONG NAME*. They send to LOCAL_MASTER_BROWSER_NAME<00> + * instead of WORKGROUP<1d> name. So to fix this we check if + * the workgroup name is our own name, and if so change it + * to be our primary workgroup name. + */ + + if(strequal(work_name, global_myname())) + nstrcpy(work_name,lp_workgroup()); + + /* + * We are being very agressive here in adding a workgroup + * name on the basis of a host announcing itself as being + * in that workgroup. Maybe we should wait for the workgroup + * announce instead ? JRA. + */ + + work = find_workgroup_on_subnet(subrec, work_name); + + if(servertype != 0) { + if (work ==NULL ) { + /* We have no record of this workgroup. Add it. */ + if((work = create_workgroup_on_subnet(subrec, work_name, ttl))==NULL) + goto done; + } - if((servrec = find_server_in_workgroup( work, announce_name))==NULL) - { - /* If this server is not already in the workgroup, add it. */ - create_server_on_workgroup(work, announce_name, - servertype|SV_TYPE_LOCAL_LIST_ONLY, - ttl, comment); - } - else - { - /* Update the record. */ - servrec->serv.type = servertype|SV_TYPE_LOCAL_LIST_ONLY; - update_server_ttl( servrec, ttl); - fstrcpy(servrec->serv.comment,comment); - } - } - else - { - /* - * This server is announcing it is going down. Remove it from the - * workgroup. - */ - if(!is_myname(announce_name) && (work != NULL) && - ((servrec = find_server_in_workgroup( work, announce_name))!=NULL) - ) - { - remove_server_from_workgroup( work, servrec); - } - } - subrec->work_changed = True; + if((servrec = find_server_in_workgroup( work, announce_name))==NULL) { + /* If this server is not already in the workgroup, add it. */ + create_server_on_workgroup(work, announce_name, + servertype|SV_TYPE_LOCAL_LIST_ONLY, + ttl, comment); + } else { + /* Update the record. */ + servrec->serv.type = servertype|SV_TYPE_LOCAL_LIST_ONLY; + update_server_ttl( servrec, ttl); + fstrcpy(servrec->serv.comment,comment); + } + } else { + /* + * This server is announcing it is going down. Remove it from the + * workgroup. + */ + if(!is_myname(announce_name) && (work != NULL) && + ((servrec = find_server_in_workgroup( work, announce_name))!=NULL)) { + remove_server_from_workgroup( work, servrec); + } + } + + subrec->work_changed = True; done: - END_PROFILE(host_announce); + + END_PROFILE(host_announce); } /******************************************************************* @@ -199,53 +196,55 @@ done: void process_workgroup_announce(struct subnet_record *subrec, struct packet_struct *p, char *buf) { - struct dgram_packet *dgram = &p->packet.dgram; - int ttl = IVAL(buf,1)/1000; - char *workgroup_announce_name = buf+5; - uint32 servertype = IVAL(buf,23); - char *master_name = buf+31; - struct work_record *work; - char *source_name = dgram->source_name.name; - - START_PROFILE(workgroup_announce); - master_name[43] = 0; - - DEBUG(3,("process_workgroup_announce: from %s<%02x> IP %s to \ + struct dgram_packet *dgram = &p->packet.dgram; + int ttl = IVAL(buf,1)/1000; + nstring workgroup_announce_name; + nstring master_name; + uint32 servertype = IVAL(buf,23); + struct work_record *work; + nstring source_name; + nstring dest_name; + + START_PROFILE(workgroup_announce); + + pull_ascii_nstring(workgroup_announce_name,buf+5); + pull_ascii_nstring(master_name,buf+31); + pull_ascii_nstring(source_name,dgram->source_name.name); + pull_ascii_nstring(dest_name,dgram->dest_name.name); + + DEBUG(3,("process_workgroup_announce: from %s<%02x> IP %s to \ %s for workgroup %s.\n", source_name, source_name[15], inet_ntoa(p->ip), - nmb_namestr(&dgram->dest_name),workgroup_announce_name)); - - DEBUG(5,("process_workgroup_announce: ttl=%d server type=%08x master browser=%s\n", - ttl, servertype, master_name)); - - /* Workgroup announcements must only go to the MSBROWSE name. */ - if (!strequal(dgram->dest_name.name, MSBROWSE) || (dgram->dest_name.name_type != 0x1)) - { - DEBUG(0,("process_workgroup_announce: from IP %s should be to __MSBROWSE__<0x01> not %s\n", - inet_ntoa(p->ip), nmb_namestr(&dgram->dest_name))); - goto done; - } + nmb_namestr(&dgram->dest_name),workgroup_announce_name)); + + DEBUG(5,("process_workgroup_announce: ttl=%d server type=%08x master browser=%s\n", + ttl, servertype, master_name)); + + /* Workgroup announcements must only go to the MSBROWSE name. */ + if (!strequal(dest_name, MSBROWSE) || (dgram->dest_name.name_type != 0x1)) { + DEBUG(0,("process_workgroup_announce: from IP %s should be to __MSBROWSE__<0x01> not %s\n", + inet_ntoa(p->ip), nmb_namestr(&dgram->dest_name))); + goto done; + } + + if ((work = find_workgroup_on_subnet(subrec, workgroup_announce_name))==NULL) { + /* We have no record of this workgroup. Add it. */ + if((work = create_workgroup_on_subnet(subrec, workgroup_announce_name, ttl))==NULL) + goto done; + } else { + /* Update the workgroup death_time. */ + update_workgroup_ttl(work, ttl); + } + + if(*work->local_master_browser_name == '\0') { + /* Set the master browser name. */ + set_workgroup_local_master_browser_name( work, master_name ); + } + + subrec->work_changed = True; - if ((work = find_workgroup_on_subnet(subrec, workgroup_announce_name))==NULL) - { - /* We have no record of this workgroup. Add it. */ - if((work = create_workgroup_on_subnet(subrec, workgroup_announce_name, ttl))==NULL) - goto done; - } - else - { - /* Update the workgroup death_time. */ - update_workgroup_ttl(work, ttl); - } - - if(*work->local_master_browser_name == '\0') - { - /* Set the master browser name. */ - set_workgroup_local_master_browser_name( work, master_name ); - } - - subrec->work_changed = True; done: - END_PROFILE(workgroup_announce); + + END_PROFILE(workgroup_announce); } /******************************************************************* @@ -254,117 +253,110 @@ done: void process_local_master_announce(struct subnet_record *subrec, struct packet_struct *p, char *buf) { - struct dgram_packet *dgram = &p->packet.dgram; - int ttl = IVAL(buf,1)/1000; - char *server_name = buf+5; - uint32 servertype = IVAL(buf,23); - char *comment = buf+31; - char *work_name; - struct work_record *work; - struct server_record *servrec; - char *source_name = dgram->source_name.name; - - START_PROFILE(local_master_announce); - comment[43] = 0; - - DEBUG(3,("process_local_master_announce: from %s<%02x> IP %s to \ + struct dgram_packet *dgram = &p->packet.dgram; + int ttl = IVAL(buf,1)/1000; + nstring server_name; + uint32 servertype = IVAL(buf,23); + fstring comment; + nstring work_name; + struct work_record *work; + struct server_record *servrec; + nstring source_name; + + START_PROFILE(local_master_announce); + + pull_ascii_nstring(server_name,buf+5); + pull_ascii_fstring(comment, buf+31); + comment[42] = 0; + pull_ascii_nstring(source_name, dgram->source_name.name); + pull_ascii_nstring(work_name, dgram->dest_name.name); + + DEBUG(3,("process_local_master_announce: from %s<%02x> IP %s to \ %s for server %s.\n", source_name, source_name[15], inet_ntoa(p->ip), - nmb_namestr(&dgram->dest_name),server_name)); + nmb_namestr(&dgram->dest_name),server_name)); - DEBUG(5,("process_local_master_announce: ttl=%d server type=%08x comment=%s\n", - ttl, servertype, comment)); + DEBUG(5,("process_local_master_announce: ttl=%d server type=%08x comment=%s\n", + ttl, servertype, comment)); - /* A local master announcement must be sent to the name WORKGROUP<1e>. */ - if(dgram->dest_name.name_type != 0x1e) - { - DEBUG(0,("process_local_master_announce: incorrect name type for destination from IP %s \ + /* A local master announcement must be sent to the name WORKGROUP<1e>. */ + if(dgram->dest_name.name_type != 0x1e) { + DEBUG(0,("process_local_master_announce: incorrect name type for destination from IP %s \ (was %02x) should be 0x1e. Ignoring packet.\n", - inet_ntoa(p->ip), dgram->dest_name.name_type)); - goto done; - } - - /* Filter servertype to remove impossible bits. */ - servertype &= ~(SV_TYPE_LOCAL_LIST_ONLY|SV_TYPE_DOMAIN_ENUM); - - /* For a local master announce the workgroup name is the destination name. */ - work_name = dgram->dest_name.name; - - if ((work = find_workgroup_on_subnet(subrec, work_name))==NULL) - { - /* Don't bother adding if it's a local master release announce. */ - if(servertype == 0) - goto done; - - /* We have no record of this workgroup. Add it. */ - if((work = create_workgroup_on_subnet(subrec, work_name, ttl))==NULL) - goto done; - } - - /* If we think we're the local master browser for this workgroup, - we should never have got this packet. We don't see our own - packets. - */ - if(AM_LOCAL_MASTER_BROWSER(work)) - { - DEBUG(0,("process_local_master_announce: Server %s at IP %s is announcing itself as \ + inet_ntoa(p->ip), dgram->dest_name.name_type)); + goto done; + } + + /* Filter servertype to remove impossible bits. */ + servertype &= ~(SV_TYPE_LOCAL_LIST_ONLY|SV_TYPE_DOMAIN_ENUM); + + /* For a local master announce the workgroup name is the destination name. */ + + if ((work = find_workgroup_on_subnet(subrec, work_name))==NULL) { + /* Don't bother adding if it's a local master release announce. */ + if(servertype == 0) + goto done; + + /* We have no record of this workgroup. Add it. */ + if((work = create_workgroup_on_subnet(subrec, work_name, ttl))==NULL) + goto done; + } + + /* If we think we're the local master browser for this workgroup, + we should never have got this packet. We don't see our own + packets. + */ + if(AM_LOCAL_MASTER_BROWSER(work)) { + DEBUG(0,("process_local_master_announce: Server %s at IP %s is announcing itself as \ a local master browser for workgroup %s and we think we are master. Forcing election.\n", - server_name, inet_ntoa(p->ip), work_name)); + server_name, inet_ntoa(p->ip), work_name)); - /* Samba nmbd versions 1.9.17 to 1.9.17p4 have a bug in that when - they have become a local master browser once, they will never - stop sending local master announcements. To fix this we send - them a reset browser packet, with level 0x2 on the __SAMBA__ - name that only they should be listening to. */ + /* Samba nmbd versions 1.9.17 to 1.9.17p4 have a bug in that when + they have become a local master browser once, they will never + stop sending local master announcements. To fix this we send + them a reset browser packet, with level 0x2 on the __SAMBA__ + name that only they should be listening to. */ - send_browser_reset( 0x2, "__SAMBA__" , 0x20, p->ip); - - /* We should demote ourself and force an election. */ - - unbecome_local_master_browser( subrec, work, True); - - /* The actual election requests are handled in - nmbd_election.c */ - goto done; - } - - /* Find the server record on this workgroup. If it doesn't exist, add it. */ - - if(servertype != 0) - { - if((servrec = find_server_in_workgroup( work, server_name))==NULL) - { - /* If this server is not already in the workgroup, add it. */ - create_server_on_workgroup(work, server_name, - servertype|SV_TYPE_LOCAL_LIST_ONLY, - ttl, comment); - } - else - { - /* Update the record. */ - servrec->serv.type = servertype|SV_TYPE_LOCAL_LIST_ONLY; - update_server_ttl(servrec, ttl); - fstrcpy(servrec->serv.comment,comment); - } - - set_workgroup_local_master_browser_name( work, server_name ); - } - else - { - /* - * This server is announcing it is going down. Remove it from the - * workgroup. - */ - if(!is_myname(server_name) && (work != NULL) && - ((servrec = find_server_in_workgroup( work, server_name))!=NULL) - ) - { - remove_server_from_workgroup( work, servrec); - } - } - - subrec->work_changed = True; + send_browser_reset( 0x2, "__SAMBA__" , 0x20, p->ip); + + /* We should demote ourself and force an election. */ + + unbecome_local_master_browser( subrec, work, True); + + /* The actual election requests are handled in nmbd_election.c */ + goto done; + } + + /* Find the server record on this workgroup. If it doesn't exist, add it. */ + + if(servertype != 0) { + if((servrec = find_server_in_workgroup( work, server_name))==NULL) { + /* If this server is not already in the workgroup, add it. */ + create_server_on_workgroup(work, server_name, + servertype|SV_TYPE_LOCAL_LIST_ONLY, + ttl, comment); + } else { + /* Update the record. */ + servrec->serv.type = servertype|SV_TYPE_LOCAL_LIST_ONLY; + update_server_ttl(servrec, ttl); + fstrcpy(servrec->serv.comment,comment); + } + + set_workgroup_local_master_browser_name( work, server_name ); + } else { + /* + * This server is announcing it is going down. Remove it from the + * workgroup. + */ + if(!is_myname(server_name) && (work != NULL) && + ((servrec = find_server_in_workgroup( work, server_name))!=NULL)) { + remove_server_from_workgroup( work, servrec); + } + } + + subrec->work_changed = True; done: - END_PROFILE(local_master_announce); + + END_PROFILE(local_master_announce); } /******************************************************************* @@ -377,50 +369,49 @@ done: void process_master_browser_announce(struct subnet_record *subrec, struct packet_struct *p,char *buf) { - char *local_master_name = buf; - struct work_record *work; - struct browse_cache_record *browrec; + nstring local_master_name; + struct work_record *work; + struct browse_cache_record *browrec; - START_PROFILE(master_browser_announce); - local_master_name[15] = 0; + START_PROFILE(master_browser_announce); + + pull_ascii_nstring(local_master_name,buf); - DEBUG(3,("process_master_browser_announce: Local master announce from %s IP %s.\n", - local_master_name, inet_ntoa(p->ip))); + DEBUG(3,("process_master_browser_announce: Local master announce from %s IP %s.\n", + local_master_name, inet_ntoa(p->ip))); - if (!lp_domain_master()) - { - DEBUG(0,("process_master_browser_announce: Not configured as domain \ + if (!lp_domain_master()) { + DEBUG(0,("process_master_browser_announce: Not configured as domain \ master - ignoring master announce.\n")); - goto done; - } + goto done; + } - if((work = find_workgroup_on_subnet(subrec, lp_workgroup())) == NULL) - { - DEBUG(0,("process_master_browser_announce: Cannot find workgroup %s on subnet %s\n", - lp_workgroup(), subrec->subnet_name)); - goto done; - } - - if(!AM_DOMAIN_MASTER_BROWSER(work)) - { - DEBUG(0,("process_master_browser_announce: Local master announce made to us from \ + if((work = find_workgroup_on_subnet(subrec, lp_workgroup())) == NULL) { + DEBUG(0,("process_master_browser_announce: Cannot find workgroup %s on subnet %s\n", + lp_workgroup(), subrec->subnet_name)); + goto done; + } + + if(!AM_DOMAIN_MASTER_BROWSER(work)) { + DEBUG(0,("process_master_browser_announce: Local master announce made to us from \ %s IP %s and we are not a domain master browser.\n", local_master_name, inet_ntoa(p->ip))); - goto done; - } + goto done; + } - /* Add this host as a local master browser entry on the browse lists. - This causes a sync request to be made to it at a later date. - */ + /* Add this host as a local master browser entry on the browse lists. + This causes a sync request to be made to it at a later date. + */ + + if((browrec = find_browser_in_lmb_cache( local_master_name )) == NULL) { + /* Add it. */ + create_browser_in_lmb_cache( work->work_group, local_master_name, p->ip); + } else { + update_browser_death_time(browrec); + } - if((browrec = find_browser_in_lmb_cache( local_master_name )) == NULL) - { - /* Add it. */ - create_browser_in_lmb_cache( work->work_group, local_master_name, p->ip); - } - else - update_browser_death_time(browrec); done: - END_PROFILE(master_browser_announce); + + END_PROFILE(master_browser_announce); } /******************************************************************* @@ -429,123 +420,117 @@ done: void process_lm_host_announce(struct subnet_record *subrec, struct packet_struct *p, char *buf) { - struct dgram_packet *dgram = &p->packet.dgram; - uint32 servertype = IVAL(buf,1); - int osmajor=CVAL(buf,5); /* major version of node software */ - int osminor=CVAL(buf,6); /* minor version of node software */ - int ttl = SVAL(buf,7); - char *announce_name = buf+9; - struct work_record *work; - struct server_record *servrec; - const char *work_name; - char *source_name = dgram->source_name.name; - pstring comment; - char *s = buf+9; - - START_PROFILE(lm_host_announce); - s = skip_string(s,1); - StrnCpy(comment, s, 43); - - DEBUG(3,("process_lm_host_announce: LM Announcement from %s<%02x> IP %s to \ -%s for server %s.\n", source_name, source_name[15], inet_ntoa(p->ip), - nmb_namestr(&dgram->dest_name),announce_name)); - - DEBUG(5,("process_lm_host_announce: os=(%d,%d) ttl=%d server type=%08x comment=%s\n", - osmajor, osminor, ttl, servertype,comment)); - - if ((osmajor < 36) || (osmajor > 38) || (osminor !=0)) - { - DEBUG(5,("process_lm_host_announce: LM Announcement packet does not \ + struct dgram_packet *dgram = &p->packet.dgram; + uint32 servertype = IVAL(buf,1); + int osmajor=CVAL(buf,5); /* major version of node software */ + int osminor=CVAL(buf,6); /* minor version of node software */ + int ttl = SVAL(buf,7); + nstring announce_name; + struct work_record *work; + struct server_record *servrec; + nstring work_name; + nstring source_name; + fstring comment; + char *s = buf+9; + + START_PROFILE(lm_host_announce); + s = skip_string(s,1); + pull_ascii(comment, s, sizeof(fstring), 43, STR_TERMINATE); + + pull_ascii_nstring(announce_name,buf+9); + pull_ascii_nstring(source_name,dgram->source_name.name); + /* For a LanMan host announce the workgroup name is the destination name. */ + pull_ascii_nstring(work_name,dgram->dest_name.name); + + DEBUG(3,("process_lm_host_announce: LM Announcement from %s IP %s to \ +%s for server %s.\n", nmb_namestr(&dgram->source_name), inet_ntoa(p->ip), + nmb_namestr(&dgram->dest_name),announce_name)); + + DEBUG(5,("process_lm_host_announce: os=(%d,%d) ttl=%d server type=%08x comment=%s\n", + osmajor, osminor, ttl, servertype,comment)); + + if ((osmajor < 36) || (osmajor > 38) || (osminor !=0)) { + DEBUG(5,("process_lm_host_announce: LM Announcement packet does not \ originate from OS/2 Warp client. Ignoring packet.\n")); - /* Could have been from a Windows machine (with its LM Announce enabled), - or a Samba server. Then don't disrupt the current browse list. */ - goto done; - } + /* Could have been from a Windows machine (with its LM Announce enabled), + or a Samba server. Then don't disrupt the current browse list. */ + goto done; + } - /* Filter servertype to remove impossible bits. */ - servertype &= ~(SV_TYPE_LOCAL_LIST_ONLY|SV_TYPE_DOMAIN_ENUM); + /* Filter servertype to remove impossible bits. */ + servertype &= ~(SV_TYPE_LOCAL_LIST_ONLY|SV_TYPE_DOMAIN_ENUM); - /* A LanMan host announcement must be sent to the name WORKGROUP<00>. */ - if(dgram->dest_name.name_type != 0x00) - { - DEBUG(2,("process_lm_host_announce: incorrect name type for destination from IP %s \ + /* A LanMan host announcement must be sent to the name WORKGROUP<00>. */ + if(dgram->dest_name.name_type != 0x00) { + DEBUG(2,("process_lm_host_announce: incorrect name type for destination from IP %s \ (was %02x) should be 0x00. Allowing packet anyway.\n", - inet_ntoa(p->ip), dgram->dest_name.name_type)); - /* Change it so it was. */ - dgram->dest_name.name_type = 0x00; - } - - /* For a LanMan host announce the workgroup name is the destination name. */ - work_name = dgram->dest_name.name; - - /* - * Syntax servers version 5.1 send HostAnnounce packets to - * *THE WRONG NAME*. They send to LOCAL_MASTER_BROWSER_NAME<00> - * instead of WORKGROUP<1d> name. So to fix this we check if - * the workgroup name is our own name, and if so change it - * to be our primary workgroup name. This code is probably - * not needed in the LanMan announce code, but it won't hurt. - */ - - if(strequal(work_name, global_myname())) - work_name = lp_workgroup(); - - /* - * We are being very agressive here in adding a workgroup - * name on the basis of a host announcing itself as being - * in that workgroup. Maybe we should wait for the workgroup - * announce instead ? JRA. - */ + inet_ntoa(p->ip), dgram->dest_name.name_type)); + /* Change it so it was. */ + dgram->dest_name.name_type = 0x00; + } + + /* + * Syntax servers version 5.1 send HostAnnounce packets to + * *THE WRONG NAME*. They send to LOCAL_MASTER_BROWSER_NAME<00> + * instead of WORKGROUP<1d> name. So to fix this we check if + * the workgroup name is our own name, and if so change it + * to be our primary workgroup name. This code is probably + * not needed in the LanMan announce code, but it won't hurt. + */ + + if(strequal(work_name, global_myname())) + nstrcpy(work_name,lp_workgroup()); + + /* + * We are being very agressive here in adding a workgroup + * name on the basis of a host announcing itself as being + * in that workgroup. Maybe we should wait for the workgroup + * announce instead ? JRA. + */ + + work = find_workgroup_on_subnet(subrec, work_name); + + if(servertype != 0) { + if (work == NULL) { + /* We have no record of this workgroup. Add it. */ + if((work = create_workgroup_on_subnet(subrec, work_name, ttl))==NULL) + goto done; + } + + if((servrec = find_server_in_workgroup( work, announce_name))==NULL) { + /* If this server is not already in the workgroup, add it. */ + create_server_on_workgroup(work, announce_name, + servertype|SV_TYPE_LOCAL_LIST_ONLY, + ttl, comment); + } else { + /* Update the record. */ + servrec->serv.type = servertype|SV_TYPE_LOCAL_LIST_ONLY; + update_server_ttl( servrec, ttl); + fstrcpy(servrec->serv.comment,comment); + } + } else { + /* + * This server is announcing it is going down. Remove it from the + * workgroup. + */ + if(!is_myname(announce_name) && (work != NULL) && + ((servrec = find_server_in_workgroup( work, announce_name))!=NULL)) { + remove_server_from_workgroup( work, servrec); + } + } + + subrec->work_changed = True; + found_lm_clients = True; - work = find_workgroup_on_subnet(subrec, work_name); - - if(servertype != 0) - { - if (work == NULL) - { - /* We have no record of this workgroup. Add it. */ - if((work = create_workgroup_on_subnet(subrec, work_name, ttl))==NULL) - goto done; - } - - if((servrec = find_server_in_workgroup( work, announce_name))==NULL) - { - /* If this server is not already in the workgroup, add it. */ - create_server_on_workgroup(work, announce_name, - servertype|SV_TYPE_LOCAL_LIST_ONLY, - ttl, comment); - } - else - { - /* Update the record. */ - servrec->serv.type = servertype|SV_TYPE_LOCAL_LIST_ONLY; - update_server_ttl( servrec, ttl); - fstrcpy(servrec->serv.comment,comment); - } - } - else - { - /* - * This server is announcing it is going down. Remove it from the - * workgroup. - */ - if(!is_myname(announce_name) && (work != NULL) && - ((servrec = find_server_in_workgroup( work, announce_name))!=NULL) - ) - { - remove_server_from_workgroup( work, servrec); - } - } - - subrec->work_changed = True; - found_lm_clients = True; done: - END_PROFILE(lm_host_announce); + + END_PROFILE(lm_host_announce); } /**************************************************************************** Send a backup list response. *****************************************************************************/ + static void send_backup_list_response(struct subnet_record *subrec, struct work_record *work, struct nmb_name *send_to_name, @@ -553,40 +538,41 @@ static void send_backup_list_response(struct subnet_record *subrec, uint32 token, struct in_addr sendto_ip, int port) { - char outbuf[1024]; - char *p, *countptr; - unsigned int count = 0; + char outbuf[1024]; + char *p, *countptr; + unsigned int count = 0; + nstring send_to_namestr; #if 0 struct server_record *servrec; #endif - fstring myname; + fstring myname; - memset(outbuf,'\0',sizeof(outbuf)); + memset(outbuf,'\0',sizeof(outbuf)); - DEBUG(3,("send_backup_list_response: sending backup list for workgroup %s to %s IP %s\n", - work->work_group, nmb_namestr(send_to_name), inet_ntoa(sendto_ip))); + DEBUG(3,("send_backup_list_response: sending backup list for workgroup %s to %s IP %s\n", + work->work_group, nmb_namestr(send_to_name), inet_ntoa(sendto_ip))); - p = outbuf; + p = outbuf; - SCVAL(p,0,ANN_GetBackupListResp); /* Backup list response opcode. */ - p++; + SCVAL(p,0,ANN_GetBackupListResp); /* Backup list response opcode. */ + p++; - countptr = p; - p++; + countptr = p; + p++; - SIVAL(p,0,token); /* The sender's unique info. */ - p += 4; + SIVAL(p,0,token); /* The sender's unique info. */ + p += 4; - /* We always return at least one name - our own. */ - count = 1; - fstrcpy(myname, global_myname()); - strupper_m(myname); - myname[15]='\0'; - push_pstring_base(p, myname, outbuf); + /* We always return at least one name - our own. */ + count = 1; + fstrcpy(myname, global_myname()); + strupper_m(myname); + myname[15]='\0'; + push_pstring_base(p, myname, outbuf); - p = skip_string(p,1); + p = skip_string(p,1); - /* Look for backup browsers in this workgroup. */ + /* Look for backup browsers in this workgroup. */ #if 0 /* we don't currently send become_backup requests so we should never @@ -624,16 +610,18 @@ static void send_backup_list_response(struct subnet_record *subrec, } #endif - SCVAL(countptr, 0, count); + SCVAL(countptr, 0, count); + + pull_ascii_nstring(send_to_namestr, send_to_name->name); - DEBUG(4,("send_backup_list_response: sending response to %s<00> IP %s with %d servers.\n", - send_to_name->name, inet_ntoa(sendto_ip), count)); + DEBUG(4,("send_backup_list_response: sending response to %s<00> IP %s with %d servers.\n", + send_to_namestr, inet_ntoa(sendto_ip), count)); - send_mailslot(True, BROWSE_MAILSLOT, - outbuf,PTR_DIFF(p,outbuf), - global_myname(), 0, - send_to_name->name,0, - sendto_ip, subrec->myip, port); + send_mailslot(True, BROWSE_MAILSLOT, + outbuf,PTR_DIFF(p,outbuf), + global_myname(), 0, + send_to_namestr,0, + sendto_ip, subrec->myip, port); } /******************************************************************* @@ -649,80 +637,74 @@ static void send_backup_list_response(struct subnet_record *subrec, void process_get_backup_list_request(struct subnet_record *subrec, struct packet_struct *p,char *buf) { - struct dgram_packet *dgram = &p->packet.dgram; - struct work_record *work; - unsigned char max_number_requested = CVAL(buf,0); - uint32 token = IVAL(buf,1); /* Sender's key index for the workgroup. */ - int name_type = dgram->dest_name.name_type; - char *workgroup_name = dgram->dest_name.name; - struct subnet_record *search_subrec = subrec; - - START_PROFILE(get_backup_list); - DEBUG(3,("process_get_backup_list_request: request from %s IP %s to %s.\n", - nmb_namestr(&dgram->source_name), inet_ntoa(p->ip), - nmb_namestr(&dgram->dest_name))); + struct dgram_packet *dgram = &p->packet.dgram; + struct work_record *work; + unsigned char max_number_requested = CVAL(buf,0); + uint32 token = IVAL(buf,1); /* Sender's key index for the workgroup. */ + int name_type = dgram->dest_name.name_type; + nstring workgroup_name; + struct subnet_record *search_subrec = subrec; + + START_PROFILE(get_backup_list); + pull_ascii_nstring(workgroup_name, dgram->dest_name.name); + + DEBUG(3,("process_get_backup_list_request: request from %s IP %s to %s.\n", + nmb_namestr(&dgram->source_name), inet_ntoa(p->ip), + nmb_namestr(&dgram->dest_name))); - /* We have to be a master browser, or a domain master browser - for the requested workgroup. That means it must be our - workgroup. */ - - if(strequal(workgroup_name, lp_workgroup()) == False) - { - DEBUG(7,("process_get_backup_list_request: Ignoring announce request for workgroup %s.\n", - workgroup_name)); - goto done; - } - - if((work = find_workgroup_on_subnet(search_subrec, workgroup_name)) == NULL) - { - DEBUG(0,("process_get_backup_list_request: Cannot find workgroup %s on \ + /* We have to be a master browser, or a domain master browser + for the requested workgroup. That means it must be our + workgroup. */ + + if(strequal(workgroup_name, lp_workgroup()) == False) { + DEBUG(7,("process_get_backup_list_request: Ignoring announce request for workgroup %s.\n", + workgroup_name)); + goto done; + } + + if((work = find_workgroup_on_subnet(search_subrec, workgroup_name)) == NULL) { + DEBUG(0,("process_get_backup_list_request: Cannot find workgroup %s on \ subnet %s.\n", workgroup_name, search_subrec->subnet_name)); - goto done; - } + goto done; + } - /* - * If the packet was sent to WORKGROUP<1b> instead - * of WORKGROUP<1d> then it was unicast to us a domain master - * browser. Change search subrec to unicast. - */ + /* + * If the packet was sent to WORKGROUP<1b> instead + * of WORKGROUP<1d> then it was unicast to us a domain master + * browser. Change search subrec to unicast. + */ - if(name_type == 0x1b) - { - /* We must be a domain master browser in order to - process this packet. */ + if(name_type == 0x1b) { + /* We must be a domain master browser in order to + process this packet. */ - if(!AM_DOMAIN_MASTER_BROWSER(work)) - { - DEBUG(0,("process_get_backup_list_request: domain list requested for workgroup %s \ + if(!AM_DOMAIN_MASTER_BROWSER(work)) { + DEBUG(0,("process_get_backup_list_request: domain list requested for workgroup %s \ and I am not a domain master browser.\n", workgroup_name)); - goto done; - } + goto done; + } - search_subrec = unicast_subnet; - } - else if (name_type == 0x1d) - { - /* We must be a local master browser in order to - process this packet. */ + search_subrec = unicast_subnet; + } else if (name_type == 0x1d) { + /* We must be a local master browser in order to process this packet. */ - if(!AM_LOCAL_MASTER_BROWSER(work)) - { - DEBUG(0,("process_get_backup_list_request: domain list requested for workgroup %s \ + if(!AM_LOCAL_MASTER_BROWSER(work)) { + DEBUG(0,("process_get_backup_list_request: domain list requested for workgroup %s \ and I am not a local master browser.\n", workgroup_name)); - goto done; - } - } - else - { - DEBUG(0,("process_get_backup_list_request: Invalid name type %x - should be 0x1b or 0x1d.\n", - name_type)); - goto done; - } + goto done; + } + } else { + DEBUG(0,("process_get_backup_list_request: Invalid name type %x - should be 0x1b or 0x1d.\n", + name_type)); + goto done; + } + + send_backup_list_response(subrec, work, &dgram->source_name, + max_number_requested, token, p->ip, p->port); - send_backup_list_response(subrec, work, &dgram->source_name, - max_number_requested, token, p->ip, p->port); done: - END_PROFILE(get_backup_list); + + END_PROFILE(get_backup_list); } /******************************************************************* @@ -738,49 +720,46 @@ done: void process_reset_browser(struct subnet_record *subrec, struct packet_struct *p,char *buf) { - struct dgram_packet *dgram = &p->packet.dgram; - int state = CVAL(buf,0); - struct subnet_record *sr; + struct dgram_packet *dgram = &p->packet.dgram; + int state = CVAL(buf,0); + struct subnet_record *sr; - START_PROFILE(reset_browser); - DEBUG(1,("process_reset_browser: received diagnostic browser reset \ -request from %s IP %s state=0x%X\n", - nmb_namestr(&dgram->source_name), inet_ntoa(p->ip), state)); + START_PROFILE(reset_browser); - /* Stop being a local master browser on all our broadcast subnets. */ - if (state & 0x1) - { - for (sr = FIRST_SUBNET; sr; sr = NEXT_SUBNET_EXCLUDING_UNICAST(sr)) - { - struct work_record *work; - for (work = sr->workgrouplist; work; work = work->next) - { - if (AM_LOCAL_MASTER_BROWSER(work)) - unbecome_local_master_browser(sr, work, True); - } - } - } + DEBUG(1,("process_reset_browser: received diagnostic browser reset \ +request from %s IP %s state=0x%X\n", + nmb_namestr(&dgram->source_name), inet_ntoa(p->ip), state)); + + /* Stop being a local master browser on all our broadcast subnets. */ + if (state & 0x1) { + for (sr = FIRST_SUBNET; sr; sr = NEXT_SUBNET_EXCLUDING_UNICAST(sr)) { + struct work_record *work; + for (work = sr->workgrouplist; work; work = work->next) { + if (AM_LOCAL_MASTER_BROWSER(work)) + unbecome_local_master_browser(sr, work, True); + } + } + } - /* Discard our browse lists. */ - if (state & 0x2) - { - /* - * Calling expire_workgroups_and_servers with a -1 - * time causes all servers not marked with a PERMANENT_TTL - * on the workgroup lists to be discarded, and all - * workgroups with empty server lists to be discarded. - * This means we keep our own server names and workgroup - * as these have a PERMANENT_TTL. - */ - - expire_workgroups_and_servers(-1); - } + /* Discard our browse lists. */ + if (state & 0x2) { + /* + * Calling expire_workgroups_and_servers with a -1 + * time causes all servers not marked with a PERMANENT_TTL + * on the workgroup lists to be discarded, and all + * workgroups with empty server lists to be discarded. + * This means we keep our own server names and workgroup + * as these have a PERMANENT_TTL. + */ + + expire_workgroups_and_servers(-1); + } - /* Request to stop browsing altogether. */ - if (state & 0x4) - DEBUG(1,("process_reset_browser: ignoring request to stop being a browser.\n")); + /* Request to stop browsing altogether. */ + if (state & 0x4) + DEBUG(1,("process_reset_browser: ignoring request to stop being a browser.\n")); - END_PROFILE(reset_browser); + END_PROFILE(reset_browser); } /******************************************************************* @@ -793,33 +772,34 @@ request from %s IP %s state=0x%X\n", void process_announce_request(struct subnet_record *subrec, struct packet_struct *p, char *buf) { - struct dgram_packet *dgram = &p->packet.dgram; - struct work_record *work; - char *workgroup_name = dgram->dest_name.name; + struct dgram_packet *dgram = &p->packet.dgram; + struct work_record *work; + nstring workgroup_name; - START_PROFILE(announce_request); - DEBUG(3,("process_announce_request: Announce request from %s IP %s to %s.\n", - nmb_namestr(&dgram->source_name), inet_ntoa(p->ip), - nmb_namestr(&dgram->dest_name))); - - /* We only send announcement requests on our workgroup. */ - if(strequal(workgroup_name, lp_workgroup()) == False) - { - DEBUG(7,("process_announce_request: Ignoring announce request for workgroup %s.\n", - workgroup_name)); - goto done; - } - - if((work = find_workgroup_on_subnet(subrec, workgroup_name)) == NULL) - { - DEBUG(0,("process_announce_request: Unable to find workgroup %s on subnet !\n", - workgroup_name)); - goto done; - } + START_PROFILE(announce_request); - work->needannounce = True; + pull_ascii_nstring(workgroup_name, dgram->dest_name.name); + DEBUG(3,("process_announce_request: Announce request from %s IP %s to %s.\n", + nmb_namestr(&dgram->source_name), inet_ntoa(p->ip), + nmb_namestr(&dgram->dest_name))); + + /* We only send announcement requests on our workgroup. */ + if(strequal(workgroup_name, lp_workgroup()) == False) { + DEBUG(7,("process_announce_request: Ignoring announce request for workgroup %s.\n", + workgroup_name)); + goto done; + } + + if((work = find_workgroup_on_subnet(subrec, workgroup_name)) == NULL) { + DEBUG(0,("process_announce_request: Unable to find workgroup %s on subnet !\n", + workgroup_name)); + goto done; + } + + work->needannounce = True; done: - END_PROFILE(lm_host_announce); + + END_PROFILE(lm_host_announce); } /******************************************************************* @@ -833,30 +813,32 @@ done: void process_lm_announce_request(struct subnet_record *subrec, struct packet_struct *p, char *buf) { - struct dgram_packet *dgram = &p->packet.dgram; - char *workgroup_name = dgram->dest_name.name; + struct dgram_packet *dgram = &p->packet.dgram; + nstring workgroup_name; - START_PROFILE(lm_announce_request); - DEBUG(3,("process_lm_announce_request: Announce request from %s IP %s to %s.\n", - nmb_namestr(&dgram->source_name), inet_ntoa(p->ip), - nmb_namestr(&dgram->dest_name))); + START_PROFILE(lm_announce_request); - /* We only send announcement requests on our workgroup. */ - if(strequal(workgroup_name, lp_workgroup()) == False) - { - DEBUG(7,("process_lm_announce_request: Ignoring announce request for workgroup %s.\n", - workgroup_name)); - goto done; - } + pull_ascii_nstring(workgroup_name, dgram->dest_name.name); + DEBUG(3,("process_lm_announce_request: Announce request from %s IP %s to %s.\n", + nmb_namestr(&dgram->source_name), inet_ntoa(p->ip), + nmb_namestr(&dgram->dest_name))); - if(find_workgroup_on_subnet(subrec, workgroup_name) == NULL) - { - DEBUG(0,("process_announce_request: Unable to find workgroup %s on subnet !\n", - workgroup_name)); - goto done; - } + /* We only send announcement requests on our workgroup. */ + if(strequal(workgroup_name, lp_workgroup()) == False) { + DEBUG(7,("process_lm_announce_request: Ignoring announce request for workgroup %s.\n", + workgroup_name)); + goto done; + } + + if(find_workgroup_on_subnet(subrec, workgroup_name) == NULL) { + DEBUG(0,("process_announce_request: Unable to find workgroup %s on subnet !\n", + workgroup_name)); + goto done; + } + + found_lm_clients = True; - found_lm_clients = True; done: - END_PROFILE(lm_host_announce); + + END_PROFILE(lm_host_announce); } |