s3-lib Move isvalid83_w to mangle_hash.c

This means that there is no need for the 'valid.dat' table to be
loaded by anything other than smbd, so the unloader is also removed.

The concept of a 'valid dos character' has been replaced by the hash2
mangle method.

Andrew Bartlett

Signed-off-by: Andrew Tridgell <tridge@samba.org>

1 files changed, 34 insertions, 0 deletions

diff --git a/source3/smbd/mangle_hash.c b/source3/smbd/mangle_hash.c
index 86d84ca68c..80cd3abc7b 100644
--- a/source3/smbd/mangle_hash.c
+++ b/source3/smbd/mangle_hash.c
@@ -65,6 +65,40 @@ static const char basechars[43]="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_-!@#$%";
 
 /* -------------------------------------------------------------------- */
 
+
+/*******************************************************************
+ Determine if a character is valid in a 8.3 name.
+********************************************************************/
+
+/**
+ * Load the valid character map table from <tt>valid.dat</tt> or
+ * create from the configured codepage.
+ *
+ * This function is called whenever the configuration is reloaded.
+ * However, the valid character table is not changed if it's loaded
+ * from a file, because we can't unmap files.
+ **/
+
+static uint8 *valid_table;
+static void init_valid_table(void)
+{
+	if (valid_table) {
+		return;
+	}
+
+	valid_table = (uint8 *)map_file(data_path("valid.dat"), 0x10000);
+	if (!valid_table) {
+		smb_panic("Could not load valid.dat file required for mangle method=hash");
+		return;
+	}
+}
+
+static bool isvalid83_w(smb_ucs2_t c)
+{
+	init_valid_table();
+	return valid_table[SVAL(&c,0)] != 0;
+}
+
 static NTSTATUS has_valid_83_chars(const smb_ucs2_t *s, bool allow_wildcards)
 {
 	if (!*s) {