/* lookup.c - example program to demonstrate IDNA2008 Lookup using Libidn2 Copyright (C) 2011-2017 Simon Josefsson 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 3 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, see . */ #include /* printf, fflush, fgets, stdin, perror, fprintf */ #include /* strlen */ #include /* setlocale */ #include /* free */ #include /* idn2_lookup_ul, IDN2_OK, idn2_strerror, idn2_strerror_name */ int main (int argc, char *argv[]) { int rc; char src[BUFSIZ]; char *lookupname; setlocale (LC_ALL, ""); printf ("Enter (possibly non-ASCII) domain name to lookup: "); fflush (stdout); if (!fgets (src, sizeof (src), stdin)) { perror ("fgets"); return 1; } src[strlen (src) - 1] = '\0'; rc = idn2_lookup_ul (src, &lookupname, 0); if (rc != IDN2_OK) { fprintf (stderr, "error: %s (%s, %d)\n", idn2_strerror (rc), idn2_strerror_name (rc), rc); return 1; } printf ("IDNA2008 domain name to lookup in DNS: %s\n", lookupname); free (lookupname); return 0; }