diff options
Diffstat (limited to 'REORG.TODO/sunrpc/get_myaddr.c')
| -rw-r--r-- | REORG.TODO/sunrpc/get_myaddr.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/REORG.TODO/sunrpc/get_myaddr.c b/REORG.TODO/sunrpc/get_myaddr.c new file mode 100644 index 0000000000..df334e4134 --- /dev/null +++ b/REORG.TODO/sunrpc/get_myaddr.c @@ -0,0 +1,103 @@ +/* + * get_myaddress.c + * + * Get client's IP address via ioctl. This avoids using the yellowpages. + * Copyright (c) 2010, Oracle America, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * * Neither the name of the "Oracle America, Inc." nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <rpc/types.h> +#include <rpc/clnt.h> +#include <rpc/pmap_prot.h> +#include <sys/socket.h> +#include <stdio.h> +#include <unistd.h> +#include <libintl.h> +#include <net/if.h> +#include <ifaddrs.h> +#include <sys/ioctl.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <shlib-compat.h> + +/* + * don't use gethostbyname, which would invoke yellow pages + * + * Avoid loopback interfaces. We return information from a loopback + * interface only if there are no other possible interfaces. + */ +void +get_myaddress (struct sockaddr_in *addr) +{ + struct ifaddrs *ifa; + + if (getifaddrs (&ifa) != 0) + { + perror ("get_myaddress: getifaddrs"); + exit (1); + } + + int loopback = 0; + struct ifaddrs *run; + + again: + run = ifa; + while (run != NULL) + { + if ((run->ifa_flags & IFF_UP) + && run->ifa_addr != NULL + && run->ifa_addr->sa_family == AF_INET + && (!(run->ifa_flags & IFF_LOOPBACK) + || (loopback == 1 && (run->ifa_flags & IFF_LOOPBACK)))) + { + *addr = *((struct sockaddr_in *) run->ifa_addr); + addr->sin_port = htons (PMAPPORT); + goto out; + } + + run = run->ifa_next; + } + + if (loopback == 0) + { + loopback = 1; + goto again; + } + out: + freeifaddrs (ifa); + + /* The function is horribly specified. It does not return any error + if no interface is up. Probably this won't happen (at least + loopback is there) but still... */ +} +#ifdef EXPORT_RPC_SYMBOLS +libc_hidden_def (get_myaddress) +#else +libc_hidden_nolink_sunrpc (get_myaddress, GLIBC_2_0) +#endif |