diff options
Diffstat (limited to 'libs/libcurl/src/if2ip.c')
| -rw-r--r-- | libs/libcurl/src/if2ip.c | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/libs/libcurl/src/if2ip.c b/libs/libcurl/src/if2ip.c new file mode 100644 index 0000000000..05ae7d6f87 --- /dev/null +++ b/libs/libcurl/src/if2ip.c @@ -0,0 +1,218 @@ +/*************************************************************************** + * _ _ ____ _ + * Project ___| | | | _ \| | + * / __| | | | |_) | | + * | (__| |_| | _ <| |___ + * \___|\___/|_| \_\_____| + * + * Copyright (C) 1998 - 2013, 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 "curl_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; +} + +if2ip_result_t Curl_if2ip(int af, unsigned int remote_scope, + const char *interf, char *buf, int buf_size) +{ + struct ifaddrs *iface, *head; + if2ip_result_t res = IF2IP_NOT_FOUND; + +#ifndef ENABLE_IPV6 + (void) remote_scope; +#endif + + if(getifaddrs(&head) >= 0) { + for(iface=head; iface != NULL; iface=iface->ifa_next) { + if(iface->ifa_addr != NULL) { + if(iface->ifa_addr->sa_family == af) { + if(curl_strequal(iface->ifa_name, interf)) { + void *addr; + char *ip; + char scope[12]=""; + char ipstr[64]; +#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 != remote_scope) { + /* We are interested only in interface addresses whose + scope ID matches the remote address we want to + connect to: global (0) for global, link-local for + link-local, etc... */ + if(res == IF2IP_NOT_FOUND) res = IF2IP_AF_NOT_SUPPORTED; + continue; + } + if(scopeid) + snprintf(scope, sizeof(scope), "%%%u", scopeid); + } + else +#endif + addr = &((struct sockaddr_in *)iface->ifa_addr)->sin_addr; + res = IF2IP_FOUND; + ip = (char *) Curl_inet_ntop(af, addr, ipstr, sizeof(ipstr)); + snprintf(buf, buf_size, "%s%s", ip, scope); + break; + } + } + else if((res == IF2IP_NOT_FOUND) && + curl_strequal(iface->ifa_name, interf)) { + res = IF2IP_AF_NOT_SUPPORTED; + } + } + } + freeifaddrs(head); + } + return res; +} + +#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]; + + return (Curl_if2ip(AF_INET, 0, interf, buf, sizeof(buf)) == + IF2IP_NOT_FOUND) ? FALSE : TRUE; +} + +if2ip_result_t Curl_if2ip(int af, unsigned int remote_scope, + 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; + + (void)remote_scope; + + if(!interf || (af != AF_INET)) + return IF2IP_NOT_FOUND; + + len = strlen(interf); + if(len >= sizeof(req.ifr_name)) + return IF2IP_NOT_FOUND; + + dummy = socket(AF_INET, SOCK_STREAM, 0); + if(CURL_SOCKET_BAD == dummy) + return IF2IP_NOT_FOUND; + + 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); + /* With SIOCGIFADDR, we cannot tell the difference between an interface + that does not exist and an interface that has no address of the + correct family. Assume the interface does not exist */ + return IF2IP_NOT_FOUND; + } + + s = (struct sockaddr_in *)&req.ifr_addr; + memcpy(&in, &s->sin_addr, sizeof(in)); + Curl_inet_ntop(s->sin_family, &in, buf, buf_size); + + sclose(dummy); + return IF2IP_FOUND; +} + +#else + +bool Curl_if_is_interface_name(const char *interf) +{ + (void) interf; + + return FALSE; +} + +if2ip_result_t Curl_if2ip(int af, unsigned int remote_scope, + const char *interf, char *buf, int buf_size) +{ + (void) af; + (void) remote_scope; + (void) interf; + (void) buf; + (void) buf_size; + return IF2IP_NOT_FOUND; +} + +#endif |