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-rw-r--r--source3/nmbd/nmbd_lmhosts.c105
1 files changed, 105 insertions, 0 deletions
diff --git a/source3/nmbd/nmbd_lmhosts.c b/source3/nmbd/nmbd_lmhosts.c
new file mode 100644
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--- /dev/null
+++ b/source3/nmbd/nmbd_lmhosts.c
@@ -0,0 +1,105 @@
+/*
+ Unix SMB/CIFS implementation.
+ NBT netbios routines and daemon - version 2
+ Copyright (C) Jeremy Allison 1994-1998
+
+ 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 3 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, see <http://www.gnu.org/licenses/>.
+
+ Revision History:
+
+ Handle lmhosts file reading.
+
+*/
+
+#include "includes.h"
+#include "../libcli/nbt/libnbt.h"
+#include "nmbd/nmbd.h"
+
+/****************************************************************************
+Load a lmhosts file.
+****************************************************************************/
+
+void load_lmhosts_file(const char *fname)
+{
+ char *name = NULL;
+ int name_type;
+ struct sockaddr_storage ss;
+ TALLOC_CTX *ctx = talloc_init("load_lmhosts_file");
+ FILE *fp = startlmhosts( fname );
+
+ if (!fp) {
+ DEBUG(2,("load_lmhosts_file: Can't open lmhosts file %s. Error was %s\n",
+ fname, strerror(errno)));
+ TALLOC_FREE(ctx);
+ return;
+ }
+
+ while (getlmhostsent(ctx, fp, &name, &name_type, &ss) ) {
+ struct in_addr ipaddr;
+ struct subnet_record *subrec = NULL;
+ enum name_source source = LMHOSTS_NAME;
+
+ if (ss.ss_family != AF_INET) {
+ TALLOC_FREE(name);
+ continue;
+ }
+
+ ipaddr = ((struct sockaddr_in *)&ss)->sin_addr;
+
+ /* We find a relevant subnet to put this entry on, then add it. */
+ /* Go through all the broadcast subnets and see if the mask matches. */
+ for (subrec = FIRST_SUBNET; subrec ; subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec)) {
+ if(same_net_v4(ipaddr, subrec->bcast_ip, subrec->mask_ip))
+ break;
+ }
+
+ /* If none match add the name to the remote_broadcast_subnet. */
+ if(subrec == NULL)
+ subrec = remote_broadcast_subnet;
+
+ if(name_type == -1) {
+ /* Add the (0) and (0x20) names directly into the namelist for this subnet. */
+ (void)add_name_to_subnet(subrec,name,0x00,(uint16_t)NB_ACTIVE,PERMANENT_TTL,source,1,&ipaddr);
+ (void)add_name_to_subnet(subrec,name,0x20,(uint16_t)NB_ACTIVE,PERMANENT_TTL,source,1,&ipaddr);
+ } else {
+ /* Add the given name type to the subnet namelist. */
+ (void)add_name_to_subnet(subrec,name,name_type,(uint16_t)NB_ACTIVE,PERMANENT_TTL,source,1,&ipaddr);
+ }
+ }
+
+ TALLOC_FREE(ctx);
+ endlmhosts(fp);
+}
+
+/****************************************************************************
+ Find a name read from the lmhosts file. We secretly check the names on
+ the remote_broadcast_subnet as if the name was added to a regular broadcast
+ subnet it will be found by normal name query processing.
+****************************************************************************/
+
+bool find_name_in_lmhosts(struct nmb_name *nmbname, struct name_record **namerecp)
+{
+ struct name_record *namerec;
+
+ *namerecp = NULL;
+
+ if((namerec = find_name_on_subnet(remote_broadcast_subnet, nmbname, FIND_ANY_NAME))==NULL)
+ return False;
+
+ if(!NAME_IS_ACTIVE(namerec) || (namerec->data.source != LMHOSTS_NAME))
+ return False;
+
+ *namerecp = namerec;
+ return True;
+}