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-rw-r--r--lib/if2ip.c189
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diff --git a/lib/if2ip.c b/lib/if2ip.c
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+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2012, 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.
+ *
+ ***************************************************************************/
+
+#include "setup.h"
+
+#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 "curl_memory.h"
+/* The last #include file should be: */
+#include "memdebug.h"
+
+/* ------------------------------------------------------------------ */
+
+#if defined(HAVE_GETIFADDRS)
+
+bool Curl_if_is_interface_name(const char *interf)
+{
+ bool result = FALSE;
+
+ struct ifaddrs *iface, *head;
+
+ if(getifaddrs(&head) >= 0) {
+ for(iface=head; iface != NULL; iface=iface->ifa_next) {
+ if(curl_strequal(iface->ifa_name, interf)) {
+ result = TRUE;
+ break;
+ }
+ }
+ freeifaddrs(head);
+ }
+ return result;
+}
+
+char *Curl_if2ip(int af, const char *interf, 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, interf)) {
+ void *addr;
+ char scope[12]="";
+#ifdef ENABLE_IPV6
+ if(af == AF_INET6) {
+ unsigned int scopeid = 0;
+ addr = &((struct sockaddr_in6 *)iface->ifa_addr)->sin6_addr;
+#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID
+ /* Include the scope of this interface as part of the address */
+ scopeid = ((struct sockaddr_in6 *)iface->ifa_addr)->sin6_scope_id;
+#endif
+ if(scopeid)
+ snprintf(scope, sizeof(scope), "%%%u", scopeid);
+ }
+ else
+#endif
+ 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)
+
+bool Curl_if_is_interface_name(const char *interf)
+{
+ /* This is here just to support the old interfaces */
+ char buf[256];
+
+ char *ip = Curl_if2ip(AF_INET, interf, buf, sizeof(buf));
+
+ return (ip != NULL) ? TRUE : FALSE;
+}
+
+char *Curl_if2ip(int af, const char *interf, char *buf, int buf_size)
+{
+ struct ifreq req;
+ struct in_addr in;
+ struct sockaddr_in *s;
+ curl_socket_t dummy;
+ size_t len;
+ char *ip;
+
+ if(!interf || (af != AF_INET))
+ return NULL;
+
+ len = strlen(interf);
+ if(len >= sizeof(req.ifr_name))
+ return NULL;
+
+ dummy = socket(AF_INET, SOCK_STREAM, 0);
+ if(CURL_SOCKET_BAD == dummy)
+ return NULL;
+
+ memset(&req, 0, sizeof(req));
+ memcpy(req.ifr_name, interf, len+1);
+ req.ifr_addr.sa_family = AF_INET;
+
+ if(ioctl(dummy, SIOCGIFADDR, &req) < 0) {
+ sclose(dummy);
+ return NULL;
+ }
+
+ 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
+
+bool Curl_if_is_interface_name(const char *interf)
+{
+ (void) interf;
+
+ return FALSE;
+}
+
+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