diff options
Diffstat (limited to 'sbin/ifconfig/ifstf.c')
| -rw-r--r-- | sbin/ifconfig/ifstf.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/sbin/ifconfig/ifstf.c b/sbin/ifconfig/ifstf.c new file mode 100644 index 0000000..7d58909 --- /dev/null +++ b/sbin/ifconfig/ifstf.c @@ -0,0 +1,157 @@ +/*- + * Copyright 2013 Ermal Luci + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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. + * + * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC + * 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 <sys/param.h> +#include <sys/ioctl.h> +#include <sys/socket.h> +#include <sys/sockio.h> + +#include <stdlib.h> +#include <unistd.h> + +#include <net/ethernet.h> +#include <net/if.h> +#include <net/route.h> + +#include <netinet/in.h> +#include <sys/mbuf.h> +#include <net/if_stf.h> +#include <arpa/inet.h> + +#include <ctype.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <unistd.h> +#include <err.h> +#include <errno.h> + +#include "ifconfig.h" + +static int +do_cmd(int sock, u_long op, void *arg, size_t argsize, int set) +{ + struct ifdrv ifd; + + memset(&ifd, 0, sizeof(ifd)); + + strlcpy(ifd.ifd_name, ifr.ifr_name, sizeof(ifd.ifd_name)); + ifd.ifd_cmd = op; + ifd.ifd_len = argsize; + ifd.ifd_data = arg; + + return (ioctl(sock, set ? SIOCSDRVSPEC : SIOCGDRVSPEC, &ifd)); +} + +static void +stf_status(int s) +{ + struct stfv4args param; + + if (do_cmd(s, STF_GV4NET, ¶m, sizeof(param), 0) < 0) + return; + + printf("\tv4net %s/%d -> ", inet_ntoa(param.inaddr), param.prefix ? param.prefix : 32); + printf("tv4br %s\n", inet_ntoa(param.dstv4_addr)); + + return; +} + +static void +setstf_br(const char *val, int d, int s, const struct afswtch *afp) +{ + struct stfv4args req; + struct sockaddr_in sin; + + memset(&req, 0, sizeof(req)); + + sin.sin_len = sizeof(sin); + sin.sin_family = AF_INET; + + if (!inet_aton(val, &sin.sin_addr)) + errx(1, "%s: bad value", val); + + req.dstv4_addr = sin.sin_addr; + if (do_cmd(s, STF_SDSTV4, &req, sizeof(req), 1) < 0) + err(1, "STF_SV4DST %s", val); +} + +static void +setstf_set(const char *val, int d, int s, const struct afswtch *afp) +{ + struct stfv4args req; + struct sockaddr_in sin; + const char *errstr; + char *p = NULL; + + memset(&req, 0, sizeof(req)); + + sin.sin_len = sizeof(sin); + sin.sin_family = AF_INET; + + p = strrchr(val, '/'); + if (p == NULL) + errx(2, "Wrong argument given"); + + *p = '\0'; + if (!isdigit(*(p + 1))) + errstr = "invalid"; + else + req.prefix = (int)strtonum(p + 1, 0, 32, &errstr); + if (errstr != NULL) { + *p = '/'; + errx(1, "%s: bad value (width %s)", val, errstr); + } + + if (!inet_aton(val, &sin.sin_addr)) + errx(1, "%s: bad value", val); + + req.inaddr = sin.sin_addr; + if (do_cmd(s, STF_SV4NET, &req, sizeof(req), 1) < 0) + err(1, "STF_SV4NET %s", val); +} + +static struct cmd stf_cmds[] = { + DEF_CMD_ARG("stfv4net", setstf_set), + DEF_CMD_ARG("stfv4br", setstf_br), +}; +static struct afswtch af_stf = { + .af_name = "af_stf", + .af_af = AF_UNSPEC, + .af_other_status = stf_status, +}; + +static __constructor void +stf_ctor(void) +{ +#define N(a) (sizeof(a) / sizeof(a[0])) + int i; + + for (i = 0; i < N(stf_cmds); i++) + cmd_register(&stf_cmds[i]); + af_register(&af_stf); +#undef N +} |
