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authorMarcel Holtmann <marcel@holtmann.org>2006-06-04 12:09:30 +0000
committerMarcel Holtmann <marcel@holtmann.org>2006-06-04 12:09:30 +0000
commitb96133c91a2abcc6b0a6de80176623f0ee6f600e (patch)
treef1d368deced789515d6e90f24188cb9d32485f1b /common/oui.c
parent798f888e7b2b0c94705bd1aea9a81934a1331d03 (diff)
Build a generic helper library
Diffstat (limited to 'common/oui.c')
-rw-r--r--common/oui.c109
1 files changed, 109 insertions, 0 deletions
diff --git a/common/oui.c b/common/oui.c
new file mode 100644
index 00000000..cc695a90
--- /dev/null
+++ b/common/oui.c
@@ -0,0 +1,109 @@
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2004-2006 Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <malloc.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+
+#include "oui.h"
+
+/* http://standards.ieee.org/regauth/oui/oui.txt */
+
+#define OUIFILE "/var/lib/misc/oui.txt"
+
+char *ouitocomp(const char *oui)
+{
+ struct stat st;
+ char *str, *map, *off, *end;
+ int fd;
+
+ fd = open("oui.txt", O_RDONLY);
+ if (fd < 0) {
+ fd = open(OUIFILE, O_RDONLY);
+ if (fd < 0) {
+ fd = open("/usr/share/misc/oui.txt", O_RDONLY);
+ if (fd < 0)
+ return NULL;
+ }
+ }
+
+ if (fstat(fd, &st) < 0) {
+ close(fd);
+ return NULL;
+ }
+
+ str = malloc(128);
+ if (!str) {
+ close(fd);
+ return NULL;
+ }
+
+ memset(str, 0, 128);
+
+ map = mmap(0, st.st_size, PROT_READ, MAP_SHARED, fd, 0);
+ if (!map || map == MAP_FAILED) {
+ free(str);
+ close(fd);
+ return NULL;
+ }
+
+ off = strstr(map, oui);
+ if (off) {
+ off += 18;
+ end = strpbrk(off, "\r\n");
+ strncpy(str, off, end - off);
+ } else {
+ free(str);
+ str = NULL;
+ }
+
+ munmap(map, st.st_size);
+
+ close(fd);
+
+ return str;
+}
+
+int oui2comp(const char *oui, char *comp, size_t size)
+{
+ char *tmp;
+
+ tmp = ouitocomp(oui);
+ if (!tmp)
+ return -1;
+
+ snprintf(comp, size, "%s", tmp);
+
+ free(tmp);
+
+ return 0;
+}