diff options
Diffstat (limited to 'lib/if2ip.c')
-rw-r--r-- | lib/if2ip.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/lib/if2ip.c b/lib/if2ip.c new file mode 100644 index 000000000..f8a37bb12 --- /dev/null +++ b/lib/if2ip.c @@ -0,0 +1,110 @@ +/***************************************************************************** + * _ _ ____ _ + * Project ___| | | | _ \| | + * / __| | | | |_) | | + * | (__| |_| | _ <| |___ + * \___|\___/|_| \_\_____| + * + * The contents of this file are subject to the Mozilla Public License + * Version 1.0 (the "License"); you may not use this file except in + * compliance with the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" + * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the + * License for the specific language governing rights and limitations + * under the License. + * + * The Original Code is Curl. + * + * The Initial Developer of the Original Code is Daniel Stenberg. + * + * Portions created by the Initial Developer are Copyright (C) 1998. + * All Rights Reserved. + * + * ------------------------------------------------------------ + * Main author: + * - Daniel Stenberg <Daniel.Stenberg@haxx.nu> + * + * http://curl.haxx.nu + * + * $Source$ + * $Revision$ + * $Date$ + * $Author$ + * $State$ + * $Locker$ + * + * ------------------------------------------------------------ + ****************************************************************************/ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "setup.h" + +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + +#if ! defined(WIN32) && ! defined(__BEOS__) + +#include <sys/socket.h> +#include <netinet/in.h> +#ifdef HAVE_ARPA_INET_H +#include <arpa/inet.h> +#endif +#include <netinet/in.h> +#ifdef HAVE_NET_IF_H +#include <net/if.h> +#endif +#include <sys/ioctl.h> + +/* -- if2ip() -- */ +#ifdef HAVE_NETDB_H +#include <netdb.h> +#endif + +#ifdef HAVE_SYS_SOCKIO_H +#include <sys/sockio.h> +#endif + +#define SYS_ERROR -1 + +char *if2ip(char *interface) +{ + int dummy; + char *ip=NULL; + + if(!interface) + return NULL; + + dummy = socket(AF_INET, SOCK_STREAM, 0); + if (SYS_ERROR == dummy) { + return NULL; + } + else { + struct ifreq req; + memset(&req, 0, sizeof(req)); + strcpy(req.ifr_name, interface); + req.ifr_addr.sa_family = AF_INET; + if (SYS_ERROR == ioctl(dummy, SIOCGIFADDR, &req, sizeof(req))) { + return NULL; + } + else { + struct in_addr in; + + struct sockaddr_in *s = (struct sockaddr_in *)&req.ifr_dstaddr; + memcpy(&in, &(s->sin_addr.s_addr), sizeof(in)); + ip = (char *)strdup(inet_ntoa(in)); + } + close(dummy); + } + return ip; +} + +/* -- end of if2ip() -- */ +#else +#define if2ip(x) NULL +#endif |