diff options
Diffstat (limited to 'tests/sys/netpfil/common/divapp.c')
| -rw-r--r-- | tests/sys/netpfil/common/divapp.c | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/tests/sys/netpfil/common/divapp.c b/tests/sys/netpfil/common/divapp.c new file mode 100644 index 000000000000..d0f4b345b14c --- /dev/null +++ b/tests/sys/netpfil/common/divapp.c @@ -0,0 +1,146 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2023 Igor Ostapenko <pm@igoro.pro> + * + * 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 PROJECT 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 PROJECT 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. + */ + +/* Used by divert(4) related tests */ + +#include <errno.h> +#include <stdlib.h> +#include <stdbool.h> +#include <err.h> +#include <sysexits.h> +#include <string.h> + +#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <netinet/ip.h> + + +struct context { + unsigned short divert_port; + bool divert_back; + + int fd; + struct sockaddr_in sin; + socklen_t sin_len; + char pkt[IP_MAXPACKET]; + ssize_t pkt_n; +}; + +static void +init(struct context *c) +{ + c->fd = socket(PF_DIVERT, SOCK_RAW, 0); + if (c->fd == -1) + errx(EX_OSERR, "init: Cannot create divert socket."); + + memset(&c->sin, 0, sizeof(c->sin)); + c->sin.sin_family = AF_INET; + c->sin.sin_port = htons(c->divert_port); + c->sin.sin_addr.s_addr = INADDR_ANY; + c->sin_len = sizeof(struct sockaddr_in); + + if (bind(c->fd, (struct sockaddr *) &c->sin, c->sin_len) != 0) + errx(EX_OSERR, "init: Cannot bind divert socket."); +} + +static ssize_t +recv_pkt(struct context *c) +{ + fd_set readfds; + struct timeval timeout; + int s; + + FD_ZERO(&readfds); + FD_SET(c->fd, &readfds); + timeout.tv_sec = 3; + timeout.tv_usec = 0; + + s = select(c->fd + 1, &readfds, 0, 0, &timeout); + if (s == -1) + errx(EX_IOERR, "recv_pkt: select() errors."); + if (s != 1) /* timeout */ + return (-1); + + c->pkt_n = recvfrom(c->fd, c->pkt, sizeof(c->pkt), 0, + (struct sockaddr *) &c->sin, &c->sin_len); + if (c->pkt_n == -1) + errx(EX_IOERR, "recv_pkt: recvfrom() errors."); + + return (c->pkt_n); +} + +static void +send_pkt(struct context *c) +{ + ssize_t n; + + n = sendto(c->fd, c->pkt, c->pkt_n, 0, + (struct sockaddr *) &c->sin, c->sin_len); + if (n == -1) + err(EX_IOERR, "send_pkt: sendto() errors"); + if (n != c->pkt_n) + errx(EX_IOERR, "send_pkt: sendto() sent %zd of %zd bytes.", + n, c->pkt_n); +} + +int +main(int argc, char *argv[]) +{ + struct context c; + int npkt; + + if (argc < 2) + errx(EX_USAGE, + "Usage: %s <divert-port> [divert-back]", argv[0]); + + memset(&c, 0, sizeof(struct context)); + + c.divert_port = (unsigned short) strtol(argv[1], NULL, 10); + if (c.divert_port == 0) + errx(EX_USAGE, "divert port is not defined."); + + if (argc >= 3 && strcmp(argv[2], "divert-back") == 0) + c.divert_back = true; + + + init(&c); + + npkt = 0; + while (recv_pkt(&c) > 0) { + if (c.divert_back) + send_pkt(&c); + npkt++; + if (npkt >= 10) + break; + } + + if (npkt != 1) + errx(EXIT_FAILURE, "%d: npkt=%d.", c.divert_port, npkt); + + return (EXIT_SUCCESS); +} |