CMakeLua/Utilities/cmcurl-7.19.0/lib/if2ip.c

   1 /***************************************************************************
   2  *                                  _   _ ____  _
   3  *  Project                     ___| | | |  _ \| |
   4  *                             / __| | | | |_) | |
   5  *                            | (__| |_| |  _ <| |___
   6  *                             \___|\___/|_| \_\_____|
   7  *
   8  * Copyright (C) 1998 - 2007, 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  * $Id: if2ip.c,v 1.1.1.1 2008-09-23 16:32:05 hoffman Exp $
  22  ***************************************************************************/
  23
  24 #include "setup.h"
  25
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29
  30 #ifdef HAVE_UNISTD_H
  31 #include <unistd.h>
  32 #endif
  33
  34 #include "if2ip.h"
  35
  36 /*
  37  * This test can probably be simplified to #if defined(SIOCGIFADDR) and
  38  * moved after the following includes.
  39  */
  40 #if !defined(WIN32) && !defined(__BEOS__) && !defined(__CYGWIN__) && \
  41     !defined(__riscos__) && !defined(__INTERIX) && !defined(NETWARE) && \
  42     !defined(__AMIGA__) && !defined(__minix) && !defined(__SYMBIAN32__) && \
  43     !defined(__WATCOMC__)
  44
  45 #ifdef HAVE_SYS_SOCKET_H
  46 #include <sys/socket.h>
  47 #endif
  48 #ifdef HAVE_NETINET_IN_H
  49 #include <netinet/in.h>
  50 #endif
  51 #ifdef HAVE_ARPA_INET_H
  52 #include <arpa/inet.h>
  53 #endif
  54
  55 #ifdef HAVE_SYS_TIME_H
  56 /* This must be before net/if.h for AIX 3.2 to enjoy life */
  57 #include <sys/time.h>
  58 #endif
  59 #ifdef HAVE_NET_IF_H
  60 #include <net/if.h>
  61 #endif
  62 #ifdef HAVE_SYS_IOCTL_H
  63 #include <sys/ioctl.h>
  64 #endif
  65
  66 #ifdef HAVE_NETDB_H
  67 #include <netdb.h>
  68 #endif
  69
  70 #ifdef HAVE_SYS_SOCKIO_H
  71 #include <sys/sockio.h>
  72 #endif
  73
  74 #ifdef VMS
  75 #include <inet.h>
  76 #endif
  77
  78 #include "inet_ntop.h"
  79 #include "memory.h"
  80
  81 /* The last #include file should be: */
  82 #include "memdebug.h"
  83
  84 #define SYS_ERROR -1
  85
  86 char *Curl_if2ip(const char *interface, char *buf, int buf_size)
  87 {
  88   int dummy;
  89   char *ip=NULL;
  90
  91   if(!interface)
  92     return NULL;
  93
  94   dummy = socket(AF_INET, SOCK_STREAM, 0);
  95   if(SYS_ERROR == dummy) {
  96     return NULL;
  97   }
  98   else {
  99     struct ifreq req;
 100     size_t len = strlen(interface);
 101     memset(&req, 0, sizeof(req));
 102     if(len >= sizeof(req.ifr_name)) {
 103       sclose(dummy);
 104       return NULL; /* this can't be a fine interface name */
 105     }
 106     memcpy(req.ifr_name, interface, len+1);
 107     req.ifr_addr.sa_family = AF_INET;
 108 #ifdef IOCTL_3_ARGS
 109     if(SYS_ERROR == ioctl(dummy, SIOCGIFADDR, &req)) {
 110 #else
 111     if(SYS_ERROR == ioctl(dummy, SIOCGIFADDR, &req, sizeof(req))) {
 112 #endif
 113       sclose(dummy);
 114       return NULL;
 115     }
 116     else {
 117       struct in_addr in;
 118
 119       struct sockaddr_in *s = (struct sockaddr_in *)&req.ifr_dstaddr;
 120       memcpy(&in, &s->sin_addr, sizeof(in));
 121       ip = (char *) Curl_inet_ntop(s->sin_family, &in, buf, buf_size);
 122     }
 123     sclose(dummy);
 124   }
 125   return ip;
 126 }
 127
 128 /* -- end of if2ip() -- */
 129 #else
 130 char *Curl_if2ip(const char *interf, char *buf, int buf_size)
 131 {
 132     (void) interf;
 133     (void) buf;
 134     (void) buf_size;
 135     return NULL;
 136 }
 137 #endif