libwind from Assar. stringprep library supporting nameprep, saslprep and ldapprep

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@22551 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/wind/map.c

@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2004 Kungliga Tekniska H<>gskolan
+ * (Royal Institute of Technology, Stockholm, Sweden). 
+ * All rights reserved. 
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions 
+ * are met: 
+ *
+ * 1. Redistributions of source code must retain the above copyright 
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright 
+ *    notice, this list of conditions and the following disclaimer in the 
+ *    documentation and/or other materials provided with the distribution. 
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors 
+ *    may be used to endorse or promote products derived from this software 
+ *    without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
+ * SUCH DAMAGE. 
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include "windlocl.h"
+
+#include <stdlib.h>
+
+#include "map_table.h"
+
+RCSID("$Id$");
+
+static int
+translation_cmp(const void *key, const void *data)
+{
+    const struct translation *t1 = (const struct translation *)key;
+    const struct translation *t2 = (const struct translation *)data;
+
+    return t1->key - t2->key;
+}
+
+int
+_wind_stringprep_map(const uint32_t *in, size_t in_len,
+		     uint32_t *out, size_t *out_len,
+		     wind_profile_flags flags)
+{
+    unsigned i;
+    unsigned o = 0;
+
+    for (i = 0; i < in_len; ++i) {
+	struct translation ts = {in[i]};
+	const struct translation *s;
+
+	s = (const struct translation *)
+	    bsearch(&ts, _wind_map_table, _wind_map_table_size,
+		    sizeof(_wind_map_table[0]),
+		    translation_cmp);
+	if (s != NULL && (s->flags & flags)) {
+	    unsigned j;
+
+	    for (j = 0; j < s->val_len; ++j) {
+		if (o >= *out_len)
+		    return -1;
+		out[o++] = _wind_map_table_val[s->val_offset + j];
+	    }
+	} else {
+	    if (o >= *out_len)
+		return -1;
+	    out[o++] = in[i];
+
+	}
+    }
+    *out_len = o;
+    return 0;
+}