/* * Copyright (C) 1996-2018 The Squid Software Foundation and contributors * * Squid software is distributed under GPLv2+ license and includes * contributions from numerous individuals and organizations. * Please see the COPYING and CONTRIBUTORS files for details. */ #include "squid.h" #include "getfullhostname.h" #if HAVE_UNISTD_H /* for gethostname() function */ #include #endif #if HAVE_NETDB_H /* for gethostbyname() */ #include #endif /* for RFC 2181 constants */ #include "rfc2181.h" /* for xstrncpy() - may need breaking out of there. */ #include "util.h" /** \retval NULL An error occured. \retval * The fully qualified name (FQDN) of the current host. * Pointer is only valid until the next call to the gethost*() functions. * \todo Make this a squid String result so the duration limit is flexible. */ const char * getfullhostname(void) { const struct hostent *hp = NULL; static char buf[RFC2181_MAXHOSTNAMELEN + 1]; if (gethostname(buf, RFC2181_MAXHOSTNAMELEN) < 0) return NULL; /** \todo convert this to a getaddrinfo() call */ if ((hp = gethostbyname(buf)) != NULL) xstrncpy(buf, hp->h_name, RFC2181_MAXHOSTNAMELEN); return buf; }