1/*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al. 9 * 10 * This software is licensed as described in the file COPYING, which 11 * you should have received as part of this distribution. The terms 12 * are also available at http://curl.haxx.se/docs/copyright.html. 13 * 14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 15 * copies of the Software, and permit persons to whom the Software is 16 * furnished to do so, under the terms of the COPYING file. 17 * 18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 19 * KIND, either express or implied. 20 * 21 ***************************************************************************/ 22 23#include "setup.h" 24 25#ifdef HAVE_UNISTD_H 26# include <unistd.h> 27#endif 28#ifdef HAVE_SYS_SOCKET_H 29# include <sys/socket.h> 30#endif 31#ifdef HAVE_NETINET_IN_H 32# include <netinet/in.h> 33#endif 34#ifdef HAVE_ARPA_INET_H 35# include <arpa/inet.h> 36#endif 37#ifdef HAVE_NET_IF_H 38# include <net/if.h> 39#endif 40#ifdef HAVE_SYS_IOCTL_H 41# include <sys/ioctl.h> 42#endif 43#ifdef HAVE_NETDB_H 44# include <netdb.h> 45#endif 46#ifdef HAVE_SYS_SOCKIO_H 47# include <sys/sockio.h> 48#endif 49#ifdef HAVE_IFADDRS_H 50# include <ifaddrs.h> 51#endif 52#ifdef HAVE_STROPTS_H 53# include <stropts.h> 54#endif 55#ifdef __VMS 56# include <inet.h> 57#endif 58 59#include "inet_ntop.h" 60#include "strequal.h" 61#include "if2ip.h" 62 63#define _MPRINTF_REPLACE /* use our functions only */ 64#include <curl/mprintf.h> 65 66#include "curl_memory.h" 67/* The last #include file should be: */ 68#include "memdebug.h" 69 70/* ------------------------------------------------------------------ */ 71 72#if defined(HAVE_GETIFADDRS) 73 74char *Curl_if2ip(int af, const char *interface, char *buf, int buf_size) 75{ 76 struct ifaddrs *iface, *head; 77 char *ip=NULL; 78 79 if(getifaddrs(&head) >= 0) { 80 for(iface=head; iface != NULL; iface=iface->ifa_next) { 81 if((iface->ifa_addr != NULL) && 82 (iface->ifa_addr->sa_family == af) && 83 curl_strequal(iface->ifa_name, interface)) { 84 void *addr; 85 char scope[12]=""; 86#ifdef ENABLE_IPV6 87 if(af == AF_INET6) { 88 unsigned int scopeid = 0; 89 addr = &((struct sockaddr_in6 *)iface->ifa_addr)->sin6_addr; 90#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 91 /* Include the scope of this interface as part of the address */ 92 scopeid = ((struct sockaddr_in6 *)iface->ifa_addr)->sin6_scope_id; 93#endif 94 if(scopeid) 95 snprintf(scope, sizeof(scope), "%%%u", scopeid); 96 } 97 else 98#endif 99 addr = &((struct sockaddr_in *)iface->ifa_addr)->sin_addr; 100 ip = (char *) Curl_inet_ntop(af, addr, buf, buf_size); 101 strlcat(buf, scope, buf_size); 102 break; 103 } 104 } 105 freeifaddrs(head); 106 } 107 return ip; 108} 109 110#elif defined(HAVE_IOCTL_SIOCGIFADDR) 111 112char *Curl_if2ip(int af, const char *interface, char *buf, int buf_size) 113{ 114 struct ifreq req; 115 struct in_addr in; 116 struct sockaddr_in *s; 117 curl_socket_t dummy; 118 size_t len; 119 char *ip; 120 121 if(!interface || (af != AF_INET)) 122 return NULL; 123 124 len = strlen(interface); 125 if(len >= sizeof(req.ifr_name)) 126 return NULL; 127 128 dummy = socket(AF_INET, SOCK_STREAM, 0); 129 if(CURL_SOCKET_BAD == dummy) 130 return NULL; 131 132 memset(&req, 0, sizeof(req)); 133 memcpy(req.ifr_name, interface, len+1); 134 req.ifr_addr.sa_family = AF_INET; 135 136 if(ioctl(dummy, SIOCGIFADDR, &req) < 0) { 137 sclose(dummy); 138 return NULL; 139 } 140 141 s = (struct sockaddr_in *)&req.ifr_addr; 142 memcpy(&in, &s->sin_addr, sizeof(in)); 143 ip = (char *) Curl_inet_ntop(s->sin_family, &in, buf, buf_size); 144 145 sclose(dummy); 146 return ip; 147} 148 149#else 150 151char *Curl_if2ip(int af, const char *interf, char *buf, int buf_size) 152{ 153 (void) af; 154 (void) interf; 155 (void) buf; 156 (void) buf_size; 157 return NULL; 158} 159 160#endif 161