76 lines
1.9 KiB
Diff
76 lines
1.9 KiB
Diff
--- arpd/arpd.c Sun Feb 9 05:20:40 2003
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+++ arpd/arpd.c.new Mon Aug 1 00:50:40 2005
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@@ -70,7 +70,7 @@
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static void
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usage(void)
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{
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- fprintf(stderr, "Usage: arpd [-d] [-i interface] [net]\n");
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+ fprintf(stderr, "Usage: arpd [-d] [-i interface] [-a 'pcap_expr'] [{host|net|range} ...]\n");
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exit(1);
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}
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@@ -182,7 +182,7 @@
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}
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static void
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-arpd_init(char *dev, int naddresses, char **addresses)
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+arpd_init(char *dev, char *and_pcap_exp, int naddresses, char **addresses)
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{
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struct bpf_program fcode;
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char filter[1024], ebuf[PCAP_ERRBUF_SIZE], *dst;
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@@ -214,9 +214,13 @@
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errx(1, "bad interface configuration: not IP or Ethernet");
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arpd_ifent.intf_addr.addr_bits = IP_ADDR_BITS;
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- snprintf(filter, sizeof(filter), "arp %s%s%s and not ether src %s",
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+ snprintf(filter, sizeof(filter), "arp %s%s%s and not ether src %s%s%s%s",
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dst ? "and (" : "", dst ? dst : "", dst ? ")" : "",
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- addr_ntoa(&arpd_ifent.intf_link_addr));
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+ addr_ntoa(&arpd_ifent.intf_link_addr),
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+ and_pcap_exp ? " and (" : "",
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+ and_pcap_exp ? and_pcap_exp : "",
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+ and_pcap_exp ? ")" : ""
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+ );
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if ((arpd_pcap = pcap_open_live(dev, 128, 0, 500, ebuf)) == NULL)
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errx(1, "pcap_open_live: %s", ebuf);
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@@ -465,14 +469,14 @@
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{
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struct event recv_ev;
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extern int (*event_sigcb)(void);
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- char *dev;
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+ char *dev, *and_pcap_exp;
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int c, debug;
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FILE *fp;
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dev = NULL;
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debug = 0;
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- while ((c = getopt(argc, argv, "di:h?")) != -1) {
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+ while ((c = getopt(argc, argv, "a:di:h?")) != -1) {
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switch (c) {
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case 'd':
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debug = 1;
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@@ -480,6 +484,9 @@
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case 'i':
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dev = optarg;
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break;
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+ case 'a':
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+ and_pcap_exp = optarg;
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+ break;
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default:
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usage();
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break;
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@@ -489,9 +496,9 @@
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argv += optind;
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if (argc == 0)
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- arpd_init(dev, 0, NULL);
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+ arpd_init(dev, and_pcap_exp, 0, NULL);
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else
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- arpd_init(dev, argc, argv);
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+ arpd_init(dev, and_pcap_exp, argc, argv);
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if ((fp = fopen(PIDFILE, "w")) == NULL)
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err(1, "fopen");
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