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) 2004 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 #ifndef _OASYS_NET_UTILS_H_ 00040 #define _OASYS_NET_UTILS_H_ 00041 00042 #include <string.h> 00043 #include <sys/types.h> 00044 #include <sys/socket.h> 00045 #include <netinet/in.h> 00046 #include <arpa/inet.h> 00047 #include "../compat/inttypes.h" 00048 00054 #define intoa(addr) oasys::Intoa(addr).buf() 00055 00056 namespace oasys { 00057 00061 extern const char* _intoa(u_int32_t addr, char* buf, size_t bufsize); 00062 00067 class Intoa { 00068 public: 00069 Intoa(in_addr_t addr) { 00070 str_ = _intoa(addr, buf_, bufsize_); 00071 } 00072 00073 ~Intoa() { 00074 buf_[0] = '\0'; 00075 } 00076 00077 const char* buf() { return str_; } 00078 00079 static const int bufsize_ = sizeof(".xxx.xxx.xxx.xxx"); 00080 00081 protected: 00082 char buf_[bufsize_]; 00083 const char* str_; 00084 }; 00085 00089 extern int gethostbyname(const char* name, in_addr_t* addrp); 00090 00091 /* 00092 * Various overrides of {ntoh,hton}{l,s} that take a char buffer, 00093 * which can be used on systems that require alignment for integer 00094 * operations. 00095 */ 00096 00097 inline u_int32_t 00098 safe_ntohl(const char* bp) 00099 { 00100 u_int32_t netval; 00101 memcpy(&netval, bp, sizeof(netval)); 00102 return ntohl(netval); 00103 } 00104 00105 inline u_int16_t 00106 safe_ntohs(const char* bp) 00107 { 00108 u_int16_t netval; 00109 memcpy(&netval, bp, sizeof(netval)); 00110 return ntohs(netval); 00111 } 00112 00113 inline void 00114 safe_htonl(u_int32_t val, char* bp) 00115 { 00116 val = htonl(val); 00117 memcpy(bp, &val, sizeof(val)); 00118 } 00119 00120 inline void 00121 safe_htons(u_int16_t val, char* bp) 00122 { 00123 val = htons(val); 00124 memcpy(bp, &val, sizeof(val)); 00125 } 00126 00127 00128 } // namespace oasys 00129 00130 #endif /* _OASYS_NET_UTILS_H_ */