mirror of
https://git.freebsd.org/ports.git
synced 2025-05-27 16:36:28 -04:00
6ec4ad0ae6
- Add support for tun devices [1] - Update MASTER_SITES - Make happy portlint - Bump PORTEPOCH PR: ports/159078 [1] Submitted by: Lung-Pin Chang <changlp at cs.nctu.edu.tw> Approved by: jadawin@ (mentor)
132 lines
3.7 KiB
C
132 lines
3.7 KiB
C
--- ./src/knock.c.orig 2005-06-27 07:11:34.000000000 +0200
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+++ ./src/knock.c 2011-08-17 13:21:28.000000000 +0200
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@@ -1,8 +1,8 @@
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/*
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* knock.c
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- *
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+ *
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* Copyright (c) 2004-2005 by Judd Vinet <jvinet@zeroflux.org>
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- *
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+ *
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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@@ -15,7 +15,7 @@
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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@@ -23,16 +23,20 @@
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#include <stdlib.h>
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#include <stdarg.h>
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#include <netdb.h>
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-#include <sys/socket.h>
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#include <sys/types.h>
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+#include <sys/socket.h>
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+#if defined(__FreeBSD__) || defined(__APPLE__)
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+#include <netinet/in.h>
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+#endif
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#include <arpa/inet.h>
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#include <unistd.h>
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#include <string.h>
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+#include <netinet/in.h>
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#include <resolv.h>
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#include <getopt.h>
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#include <fcntl.h>
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-static char version[] = "0.5";
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+static char version[] = "#VERSION#";
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#define PROTO_TCP 1
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#define PROTO_UDP 2
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@@ -44,6 +48,7 @@
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int o_verbose = 0;
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int o_udp = 0;
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+int o_delay = 0;
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int main(int argc, char** argv)
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{
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@@ -55,12 +60,13 @@
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{
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{"verbose", no_argument, 0, 'v'},
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{"udp", no_argument, 0, 'u'},
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+ {"delay", required_argument, 0, 'd'},
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{"help", no_argument, 0, 'h'},
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{"version", no_argument, 0, 'V'},
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{0, 0, 0, 0}
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};
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- while((opt = getopt_long(argc, argv, "vuhV", opts, &optidx))) {
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+ while((opt = getopt_long(argc, argv, "vud:hV", opts, &optidx))) {
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if(opt < 0) {
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break;
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}
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@@ -68,6 +74,7 @@
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case 0: break;
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case 'v': o_verbose = 1; break;
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case 'u': o_udp = 1; break;
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+ case 'd': o_delay = (int)atoi(optarg); break;
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case 'V': ver();
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case 'h': /* fallthrough */
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default: usage();
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@@ -77,6 +84,11 @@
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usage();
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}
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+ if(o_delay < 0) {
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+ fprintf(stderr, "error: delay cannot be negative\n");
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+ exit(1);
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+ }
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+
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host = gethostbyname(argv[optind++]);
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if(host == NULL) {
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fprintf(stderr, "Cannot resolve hostname\n");
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@@ -98,16 +110,16 @@
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} else {
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port = atoi(arg);
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}
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-
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+
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if(o_udp || proto == PROTO_UDP) {
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- sd = socket(PF_INET, SOCK_DGRAM, 0);
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+ sd = socket(PF_INET, SOCK_DGRAM, 0);
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if(sd == -1) {
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fprintf(stderr, "Cannot open socket\n");
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exit(1);
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}
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} else {
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int flags;
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- sd = socket(PF_INET, SOCK_STREAM, 0);
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+ sd = socket(PF_INET, SOCK_STREAM, 0);
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if(sd == -1) {
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fprintf(stderr, "Cannot open socket\n");
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exit(1);
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@@ -121,13 +133,13 @@
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addr.sin_port = htons(port);
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if(o_udp || proto == PROTO_UDP) {
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vprint("hitting udp %s:%u\n", inet_ntoa(addr.sin_addr), port);
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- connect(sd, (struct sockaddr*)&addr, sizeof(struct sockaddr));
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- send(sd, NULL, 0, MSG_DONTWAIT);
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+ sendto(sd, "", 1, 0, (struct sockaddr*)&addr, sizeof(addr));
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} else {
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vprint("hitting tcp %s:%u\n", inet_ntoa(addr.sin_addr), port);
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connect(sd, (struct sockaddr*)&addr, sizeof(struct sockaddr));
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}
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close(sd);
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+ usleep(1000*o_delay);
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}
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return(0);
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@@ -148,6 +160,7 @@
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printf("usage: knock [options] <host> <port[:proto]> [port[:proto]] ...\n");
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printf("options:\n");
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printf(" -u, --udp make all ports hits use UDP (default is TCP)\n");
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+ printf(" -d, --delay <t> wait <t> milliseconds between port hits\n");
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printf(" -v, --verbose be verbose\n");
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printf(" -V, --version display version\n");
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printf(" -h, --help this help\n");
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