Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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
index 0000000..ecf70bd
--- /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;
+}