2 Unix SMB/CIFS implementation.
3 NBT netbios routines and daemon - version 2
4 Copyright (C) Andrew Tridgell 1994-1998
5 Copyright (C) Luke Kenneth Casson Leighton 1994-1998
6 Copyright (C) Jeremy Allison 1994-1998
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 /* this file handles asynchronous browse synchronisation requests. The
25 requests are done by forking and putting the result in a file in the
26 locks directory. We do it this way because we don't want nmbd to be
27 blocked waiting for some server to respond on a TCP connection. This
28 also allows us to have more than 1 sync going at once (tridge) */
34 struct sync_record *next, *prev;
42 /* a linked list of current sync connections */
43 static struct sync_record *syncs;
47 /*******************************************************************
48 This is the NetServerEnum callback.
49 Note sname and comment are in UNIX codepage format.
50 ******************************************************************/
51 static void callback(const char *sname, uint32 stype,
52 const char *comment, void *state)
54 x_fprintf(fp,"\"%s\" %08X \"%s\"\n", sname, stype, comment);
57 /*******************************************************************
58 Synchronise browse lists with another browse server.
59 Log in on the remote server's SMB port to their IPC$ service,
60 do a NetServerEnum and record the results in fname
61 ******************************************************************/
62 static void sync_child(char *name, int nm_type,
64 struct in_addr ip, BOOL local, BOOL servers,
67 extern fstring local_machine;
68 fstring unix_workgroup;
69 static struct cli_state cli;
70 uint32 local_type = local ? SV_TYPE_LOCAL_LIST_ONLY : 0;
71 struct nmb_name called, calling;
73 if (!cli_initialise(&cli) || !cli_connect(&cli, name, &ip)) {
77 make_nmb_name(&calling, local_machine, 0x0);
78 make_nmb_name(&called , name , nm_type);
80 if (!cli_session_request(&cli, &calling, &called))
86 if (!cli_negprot(&cli)) {
91 if (!cli_session_setup(&cli, "", "", 1, "", 0, workgroup)) {
96 if (!cli_send_tconX(&cli, "IPC$", "IPC", "", 1)) {
101 /* All the cli_XX functions take UNIX character set. */
102 fstrcpy(unix_workgroup, cli.server_domain?cli.server_domain:workgroup);
104 /* Fetch a workgroup list. */
105 cli_NetServerEnum(&cli, unix_workgroup,
106 local_type|SV_TYPE_DOMAIN_ENUM,
109 /* Now fetch a server list. */
111 fstrcpy(unix_workgroup, workgroup);
112 cli_NetServerEnum(&cli, unix_workgroup,
113 local?SV_TYPE_LOCAL_LIST_ONLY:SV_TYPE_ALL,
121 /*******************************************************************
122 initialise a browse sync with another browse server. Log in on the
123 remote server's SMB port to their IPC$ service, do a NetServerEnum
124 and record the results
125 ******************************************************************/
126 void sync_browse_lists(struct work_record *work,
127 char *name, int nm_type,
128 struct in_addr ip, BOOL local, BOOL servers)
130 struct sync_record *s;
133 START_PROFILE(sync_browse_lists);
134 /* Check we're not trying to sync with ourselves. This can
135 happen if we are a domain *and* a local master browser. */
138 END_PROFILE(sync_browse_lists);
142 s = (struct sync_record *)malloc(sizeof(*s));
147 fstrcpy(s->workgroup, work->work_group);
148 fstrcpy(s->server, name);
151 slprintf(s->fname, sizeof(pstring)-1,
152 "%s/sync.%d", lp_lockdir(), counter++);
153 all_string_sub(s->fname,"//", "/", 0);
157 /* the parent forks and returns, leaving the child to do the
158 actual sync and call END_PROFILE*/
160 if ((s->pid = sys_fork())) return;
162 BlockSignals( False, SIGTERM );
164 DEBUG(2,("Initiating browse sync for %s to %s(%s)\n",
165 work->work_group, name, inet_ntoa(ip)));
167 fp = x_fopen(s->fname,O_WRONLY|O_CREAT|O_TRUNC, 0644);
169 END_PROFILE(sync_browse_lists);
173 sync_child(name, nm_type, work->work_group, ip, local, servers,
177 END_PROFILE(sync_browse_lists);
181 /**********************************************************************
182 handle one line from a completed sync file
183 **********************************************************************/
184 static void complete_one(struct sync_record *s,
185 char *sname, uint32 stype, char *comment)
187 struct work_record *work;
188 struct server_record *servrec;
190 stype &= ~SV_TYPE_LOCAL_LIST_ONLY;
192 if (stype & SV_TYPE_DOMAIN_ENUM) {
193 /* See if we can find the workgroup on this subnet. */
194 if((work=find_workgroup_on_subnet(unicast_subnet, sname))) {
195 /* We already know about this workgroup -
197 update_workgroup_ttl(work,lp_max_ttl());
199 /* Create the workgroup on the subnet. */
200 work = create_workgroup_on_subnet(unicast_subnet,
201 sname, lp_max_ttl());
203 /* remember who the master is */
204 fstrcpy(work->local_master_browser_name,
211 work = find_workgroup_on_subnet(unicast_subnet, s->workgroup);
213 DEBUG(3,("workgroup %s doesn't exist on unicast subnet?\n",
218 if ((servrec = find_server_in_workgroup( work, sname))) {
219 /* Check that this is not a locally known
220 server - if so ignore the entry. */
221 if(!(servrec->serv.type & SV_TYPE_LOCAL_LIST_ONLY)) {
222 /* We already know about this server - update
224 update_server_ttl(servrec, lp_max_ttl());
225 /* Update the type. */
226 servrec->serv.type = stype;
231 /* Create the server in the workgroup. */
232 create_server_on_workgroup(work, sname,stype, lp_max_ttl(), comment);
236 /**********************************************************************
237 read the completed sync info
238 **********************************************************************/
239 static void complete_sync(struct sync_record *s)
242 fstring server, type_str;
249 f = x_fopen(s->fname,O_RDONLY, 0);
255 if (!fgets_slash(line,sizeof(pstring),f)) continue;
259 if (!next_token(&ptr,server,NULL,sizeof(server)) ||
260 !next_token(&ptr,type_str,NULL, sizeof(type_str)) ||
261 !next_token(&ptr,comment,NULL, sizeof(comment))) {
265 sscanf(type_str, "%X", &type);
267 complete_one(s, server, type, comment);
276 DEBUG(2,("sync with %s(%s) for workgroup %s completed (%d records)\n",
277 s->server, inet_ntoa(s->ip), s->workgroup, count));
280 /**********************************************************************
281 check for completion of any of the child processes
282 **********************************************************************/
283 void sync_check_completion(void)
285 struct sync_record *s, *next;
287 for (s=syncs;s;s=next) {
289 if (!process_exists(s->pid)) {
290 /* it has completed - grab the info */
292 DLIST_REMOVE(syncs, s);