00001 /* 00002 * IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. By 00003 * downloading, copying, installing or using the software you agree to 00004 * this license. If you do not agree to this license, do not download, 00005 * install, copy or use the software. 00006 * 00007 * Intel Open Source License 00008 * 00009 * Copyright (c) 2006 Intel Corporation. All rights reserved. 00010 * 00011 * Redistribution and use in source and binary forms, with or without 00012 * modification, are permitted provided that the following conditions are 00013 * met: 00014 * 00015 * Redistributions of source code must retain the above copyright 00016 * notice, this list of conditions and the following disclaimer. 00017 * 00018 * Redistributions in binary form must reproduce the above copyright 00019 * notice, this list of conditions and the following disclaimer in the 00020 * documentation and/or other materials provided with the distribution. 00021 * 00022 * Neither the name of the Intel Corporation nor the names of its 00023 * contributors may be used to endorse or promote products derived from 00024 * this software without specific prior written permission. 00025 * 00026 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00027 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00028 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 00029 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE INTEL OR 00030 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00031 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00032 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00033 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00034 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00035 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00036 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00037 */ 00038 00039 #include <oasys/io/NetUtils.h> 00040 #include "IPConvergenceLayerUtils.h" 00041 00042 namespace dtn { 00043 00050 bool 00051 IPConvergenceLayerUtils::parse_nexthop(const char* nexthop, 00052 in_addr_t* addr, u_int16_t* port) 00053 { 00054 static const char* log = "/dtn/cl/iputils"; 00055 const char* host; 00056 std::string tmp; 00057 00058 *addr = INADDR_NONE; 00059 *port = 0; 00060 00061 // first see if there's a colon in the string -- if so, it should 00062 // separate the hostname and port, if not, then the whole string 00063 // should be a hostname. 00064 // 00065 // note that it is invalid to have more than one colon in the 00066 // string, as caught by the check after calling strtoul 00067 const char* colon = strchr(nexthop, ':'); 00068 if (colon != NULL) { 00069 char* endstr; 00070 u_int32_t portval = strtoul(colon + 1, &endstr, 10); 00071 00072 if (*endstr != '\0' || portval > 65535) { 00073 log_warn(log, "invalid port %s in next hop '%s'", 00074 colon + 1, nexthop); 00075 return false; 00076 } 00077 00078 *port = (u_int16_t)portval; 00079 00080 tmp.assign(nexthop, colon - nexthop); 00081 host = tmp.c_str(); 00082 } else { 00083 host = nexthop; 00084 } 00085 00086 // now look up the hostname 00087 if (oasys::gethostbyname(host, addr) != 0) { 00088 log_warn(log, "invalid hostname '%s' in next hop %s", 00089 host, nexthop); 00090 return false; 00091 } 00092 00093 return true; 00094 } 00095 00096 00097 } // namespace dtn