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+/*
+ * Copyright (c) 2004 Kungliga Tekniska Högskolan
+ * (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.
+ */
+
+#include "windlocl.h"
+
+#include <stdlib.h>
+
+#include "bidi_table.h"
+
+static int
+range_entry_cmp(const void *a, const void *b)
+{
+ const struct range_entry *ea = (const struct range_entry*)a;
+ const struct range_entry *eb = (const struct range_entry*)b;
+
+ if (ea->start >= eb->start && ea->start < eb->start + eb->len)
+ return 0;
+ return ea->start - eb->start;
+}
+
+static int
+is_ral(uint32_t cp)
+{
+ struct range_entry ee = {cp};
+ void *s = bsearch(&ee, _wind_ral_table, _wind_ral_table_size,
+ sizeof(_wind_ral_table[0]),
+ range_entry_cmp);
+ return s != NULL;
+}
+
+static int
+is_l(uint32_t cp)
+{
+ struct range_entry ee = {cp};
+ void *s = bsearch(&ee, _wind_l_table, _wind_l_table_size,
+ sizeof(_wind_l_table[0]),
+ range_entry_cmp);
+ return s != NULL;
+}
+
+int
+_wind_stringprep_testbidi(const uint32_t *in, size_t in_len, wind_profile_flags flags)
+{
+ size_t i;
+ unsigned ral = 0;
+ unsigned l = 0;
+
+ if ((flags & (WIND_PROFILE_NAME|WIND_PROFILE_SASL)) == 0)
+ return 0;
+
+ for (i = 0; i < in_len; ++i) {
+ ral |= is_ral(in[i]);
+ l |= is_l(in[i]);
+ }
+ if (ral) {
+ if (l)
+ return 1;
+ if (!is_ral(in[0]) || !is_ral(in[in_len - 1]))
+ return 1;
+ }
+ return 0;
+}