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/idn-lookup.c

@@ -0,0 +1,169 @@
+/*
+ * 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 <assert.h>
+#include <err.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+
+#include <getarg.h>
+#include <roken.h>
+
+#include "windlocl.h"
+
+RCSID("$Id$");
+
+static int version_flag = 0;
+static int help_flag	= 0;
+
+
+static int
+is_separator(uint32_t u)
+{
+    return u == 0x002E || u == 0x3002;
+}
+
+static void
+lookup(const char *name)
+{
+    unsigned i;
+    char encoded[1024];
+    char *ep;
+    int ret;
+    struct addrinfo hints;
+    struct addrinfo *ai;
+
+    size_t u_len = strlen(name);
+    uint32_t *u = malloc(u_len * sizeof(uint32_t));
+    size_t norm_len = u_len;
+    uint32_t *norm = malloc(norm_len * sizeof(uint32_t));
+
+    if (u == NULL || norm == NULL)
+	errx(1, "malloc failed");
+
+    ret = wind_utf8ucs4(name, u, &u_len);
+    if (ret)
+	errx(1, "utf8 conversion failed");
+    ret = wind_stringprep(u, u_len, norm, &norm_len, WIND_PROFILE_NAME);
+    if (ret)
+	errx(1, "stringprep failed");
+    free(u);
+
+    ep = encoded;
+    for (i = 0; i < norm_len; ++i) {
+	unsigned j;
+	size_t len;
+
+	for (j = i; j < norm_len && !is_separator(norm[j]); ++j)
+	    ;
+	len = sizeof(encoded) - (ep - encoded);
+	ret = wind_punycode_toascii(norm + i, j - i, ep, &len);
+	if (ret < 0)
+	    errx(1, "punycode failed");
+	if (ret) {
+	    memmove(ep + 4, ep, len);
+	    memcpy(ep, "xn--", 4);
+	    ep += 4;
+	} else {
+	    --len;
+	}
+	ep += len;
+	*ep++ = '.';
+	i = j;
+    }
+    *ep++ = '\0';
+    free(norm);
+
+    printf("Converted \"%s\" into \"%s\"\n", name, encoded);
+
+    memset(&hints, 0, sizeof(hints));
+    hints.ai_flags = AI_CANONNAME;
+    ret = getaddrinfo(encoded, NULL, &hints, &ai);
+    if(ret)
+	errx(1, "getaddrinfo failed: %s", gai_strerror(ret));
+    printf("canonical-name: %s\n", ai->ai_canonname);
+    freeaddrinfo(ai);
+}
+
+static struct getargs args[] = {
+    {"version",	0,	arg_flag,	&version_flag,
+     "print version", NULL },
+    {"help",	0,	arg_flag,	&help_flag,
+     NULL, NULL }
+};
+
+static void
+usage (int ret)
+{
+    arg_printusage(args, sizeof(args)/sizeof(args[0]), NULL,
+		   "dns-names ...");
+    exit (ret);
+}
+
+int
+main(int argc, char **argv)
+{
+    int optidx = 0;
+    unsigned i;
+
+    setprogname (argv[0]);
+
+    if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
+	usage(1);
+    
+    if (help_flag)
+	usage (0);
+
+    if(version_flag){
+	print_version(NULL);
+	exit(0);
+    }
+
+    argc -= optidx;
+    argv += optidx;
+
+    if (argc == 0)
+	usage(1);
+
+    for (i = 0; i < argc; ++i)
+	lookup(argv[i]);
+    return 0;
+}