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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2008, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at http://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* $Id$
***************************************************************************/
#include "setup.h"
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#ifdef HAVE_NET_IF_H
# include <net/if.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
#ifdef HAVE_NETDB_H
# include <netdb.h>
#endif
#ifdef HAVE_SYS_SOCKIO_H
# include <sys/sockio.h>
#endif
#ifdef HAVE_IFADDRS_H
# include <ifaddrs.h>
#endif
#ifdef HAVE_STROPTS_H
# include <stropts.h>
#endif
#ifdef VMS
# include <inet.h>
#endif
#include "inet_ntop.h"
#include "strequal.h"
#include "if2ip.h"
#define _MPRINTF_REPLACE /* use our functions only */
#include <curl/mprintf.h>
#include "memory.h"
/* The last #include file should be: */
#include "memdebug.h"
/* ------------------------------------------------------------------ */
#if defined(HAVE_GETIFADDRS)
char *Curl_if2ip(int af, const char *interface, char *buf, int buf_size)
{
struct ifaddrs *iface, *head;
char *ip=NULL;
if (getifaddrs(&head) >= 0) {
for (iface=head; iface != NULL; iface=iface->ifa_next) {
if ((iface->ifa_addr != NULL) &&
(iface->ifa_addr->sa_family == af) &&
curl_strequal(iface->ifa_name, interface)) {
void *addr;
char scope[12]="";
if (af == AF_INET6) {
unsigned int scopeid;
addr = &((struct sockaddr_in6 *)iface->ifa_addr)->sin6_addr;
/* Include the scope of this interface as part of the address */
scopeid = ((struct sockaddr_in6 *)iface->ifa_addr)->sin6_scope_id;
if (scopeid)
snprintf(scope, sizeof(scope), "%%%u", scopeid);
}
else
addr = &((struct sockaddr_in *)iface->ifa_addr)->sin_addr;
ip = (char *) Curl_inet_ntop(af, addr, buf, buf_size);
strlcat(buf, scope, buf_size);
break;
}
}
freeifaddrs(head);
}
return ip;
}
#elif defined(HAVE_IOCTL_SIOCGIFADDR)
#define SYS_ERROR -1
char *Curl_if2ip(int af, const char *interface, char *buf, int buf_size)
{
int dummy;
char *ip=NULL;
if(!interface || (af != AF_INET))
return NULL;
dummy = socket(AF_INET, SOCK_STREAM, 0);
if(SYS_ERROR == dummy) {
return NULL;
}
else {
struct ifreq req;
size_t len = strlen(interface);
memset(&req, 0, sizeof(req));
if(len >= sizeof(req.ifr_name)) {
sclose(dummy);
return NULL; /* this can't be a fine interface name */
}
memcpy(req.ifr_name, interface, len+1);
req.ifr_addr.sa_family = AF_INET;
if(SYS_ERROR == ioctl(dummy, SIOCGIFADDR, &req)) {
sclose(dummy);
return NULL;
}
else {
struct in_addr in;
struct sockaddr_in *s = (struct sockaddr_in *)&req.ifr_addr;
memcpy(&in, &s->sin_addr, sizeof(in));
ip = (char *) Curl_inet_ntop(s->sin_family, &in, buf, buf_size);
}
sclose(dummy);
}
return ip;
}
#else
char *Curl_if2ip(int af, const char *interf, char *buf, int buf_size)
{
(void) af;
(void) interf;
(void) buf;
(void) buf_size;
return NULL;
}
#endif
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