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Diffstat (limited to 'tools/regression/ethernet/ethermulti/ethermulti.c')
| -rw-r--r-- | tools/regression/ethernet/ethermulti/ethermulti.c | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/tools/regression/ethernet/ethermulti/ethermulti.c b/tools/regression/ethernet/ethermulti/ethermulti.c new file mode 100644 index 000000000000..4b1b00c78cab --- /dev/null +++ b/tools/regression/ethernet/ethermulti/ethermulti.c @@ -0,0 +1,253 @@ +/*- + * Copyright (c) 2007 Bruce M. Simpson + * 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 THE AUTHOR 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 AUTHOR 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 <sys/types.h> +#include <sys/socket.h> +#include <sys/time.h> +#include <sys/ioctl.h> + +#include <net/if.h> +#include <net/if_dl.h> +#include <net/if_types.h> +#include <net/ethernet.h> + +#include <err.h> +#include <errno.h> +#include <getopt.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include <ifaddrs.h> + +static int dorandom = 0; +static int verbose = 0; +static char *ifname = NULL; + +/* + * The test tool exercises IP-level socket options by interrogating the + * getsockopt()/setsockopt() APIs. It does not currently test that the + * intended semantics of each option are implemented (i.e., that setting IP + * options on the socket results in packets with the desired IP options in + * it). + */ + +/* + * get_socket() is a wrapper function that returns a socket of the specified + * type, and created with or without restored root privilege (if running + * with a real uid of root and an effective uid of some other user). This + * us to test whether the same rights are granted using a socket with a + * privileged cached credential vs. a socket with a regular credential. + */ +#define PRIV_ASIS 0 +#define PRIV_GETROOT 1 +static int +get_socket_unpriv(int type) +{ + + return (socket(PF_INET, type, 0)); +} + +static int +get_socket_priv(int type) +{ + uid_t olduid; + int sock; + + if (getuid() != 0) + errx(-1, "get_sock_priv: running without real uid 0"); + + olduid = geteuid(); + if (seteuid(0) < 0) + err(-1, "get_sock_priv: seteuid(0)"); + + sock = socket(PF_INET, type, 0); + + if (seteuid(olduid) < 0) + err(-1, "get_sock_priv: seteuid(%d)", olduid); + + return (sock); +} + +static int +get_socket(int type, int priv) +{ + + if (priv) + return (get_socket_priv(type)); + else + return (get_socket_unpriv(type)); +} + +union sockunion { + struct sockaddr_storage ss; + struct sockaddr sa; + struct sockaddr_dl sdl; +}; +typedef union sockunion sockunion_t; + +static void +test_ether_multi(int sock) +{ + struct ifreq ifr; + struct sockaddr_dl *dlp; + struct ether_addr ea; + struct ifmaddrs *ifma, *ifmap; + int found; + + /* Choose an 802 multicast address. */ + if (dorandom) { + uint32_t mac4; + + srandomdev(); + mac4 = random(); + ea.octet[0] = 0x01; + ea.octet[1] = 0x80; + ea.octet[2] = ((mac4 >> 24 & 0xFF)); + ea.octet[3] = ((mac4 >> 16 & 0xFF)); + ea.octet[4] = ((mac4 >> 8 & 0xFF)); + ea.octet[5] = (mac4 & 0xFF); + } else { + struct ether_addr *nep = ether_aton("01:80:DE:FA:CA:7E"); + ea = *nep; + } + + /* Fill out ifreq, and fill out 802 group address. */ + memset(&ifr, 0, sizeof(struct ifreq)); + strlcpy(&ifr.ifr_name[0], ifname, IFNAMSIZ); + dlp = (struct sockaddr_dl *)&ifr.ifr_addr; + memset(dlp, 0, sizeof(struct sockaddr_dl)); + dlp->sdl_len = sizeof(struct sockaddr_dl); + dlp->sdl_family = AF_LINK; + dlp->sdl_alen = sizeof(struct ether_addr); + memcpy(LLADDR(dlp), &ea, sizeof(struct ether_addr)); + + /* Join an 802 group. */ + if (ioctl(sock, SIOCADDMULTI, &ifr) < 0) { + warn("can't add ethernet multicast membership"); + return; + } + + /* Check that we joined the group by calling getifmaddrs(). */ + found = 0; + if (getifmaddrs(&ifmap) != 0) { + warn("getifmaddrs()"); + } else { + for (ifma = ifmap; ifma; ifma = ifma->ifma_next) { + sockunion_t *psa = (sockunion_t *)ifma->ifma_addr; + if (ifma->ifma_name == NULL || psa == NULL) + continue; + + if (psa->sa.sa_family != AF_LINK || + psa->sdl.sdl_alen != ETHER_ADDR_LEN) + continue; + + if (bcmp(LLADDR(&psa->sdl), LLADDR(dlp), + ETHER_ADDR_LEN) == 0) { + found = 1; + break; + } + } + freeifmaddrs(ifmap); + } + if (!found) { + warnx("group membership for %s not returned by getifmaddrs()", + ether_ntoa(&ea)); + } + + /* Fill out ifreq, and fill out 802 group address. */ + memset(&ifr, 0, sizeof(struct ifreq)); + strlcpy(&ifr.ifr_name[0], ifname, IFNAMSIZ); + dlp = (struct sockaddr_dl *)&ifr.ifr_addr; + memset(dlp, 0, sizeof(struct sockaddr_dl)); + dlp->sdl_len = sizeof(struct sockaddr_dl); + dlp->sdl_family = AF_LINK; + dlp->sdl_alen = sizeof(struct ether_addr); + memcpy(LLADDR(dlp), &ea, sizeof(struct ether_addr)); + + /* Leave an 802 group. */ + if (ioctl(sock, SIOCDELMULTI, &ifr) < 0) + warn("can't delete ethernet multicast membership"); + +} + +static void +testsuite(int priv) +{ + int sock; + + sock = get_socket(SOCK_DGRAM, 0); + if (sock == -1) + err(-1, "get_socket(SOCK_DGRAM) for test_ether_multi()", priv); + test_ether_multi(sock); + close(sock); +} + +static void +usage() +{ + + fprintf(stderr, "usage: ethermulti -i ifname [-r] [-v]\n"); + exit(EXIT_FAILURE); +} + +int +main(int argc, char *argv[]) +{ + int ch; + + while ((ch = getopt(argc, argv, "i:rv")) != -1) { + switch (ch) { + case 'i': + ifname = optarg; + break; + case 'r': + dorandom = 1; /* introduce non-determinism */ + break; + case 'v': + verbose = 1; + break; + default: + usage(); + } + } + if (ifname == NULL) + usage(); + + printf("1..1\n"); + if (geteuid() != 0) { + errx(1, "Not running as root, can't run tests as non-root"); + /*NOTREACHED*/ + } else { + fprintf(stderr, + "Running tests with ruid %d euid %d sock uid 0\n", + getuid(), geteuid()); + testsuite(PRIV_ASIS); + } + printf("ok 1 - ethermulti\n"); + exit(0); +} |