| 1 | /*
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| 2 | * Copyright (c) 1995 Danny Gasparovski.
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| 3 | * Portions copyright (c) 2000 Kelly Price.
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| 4 | *
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| 5 | * Please read the file COPYRIGHT for the
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| 6 | * terms and conditions of the copyright.
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| 7 | */
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| 8 |
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| 9 | #include <slirp.h>
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| 10 | #include <iprt/string.h>
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| 11 | #include <iprt/stream.h>
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| 12 |
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| 13 | #ifdef DEBUG
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| 14 | void dump_packet(void *, int);
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| 15 | #endif
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| 16 |
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| 17 | #define IP4_ADDR_PRINTF_DECOMP(ip) ((ip) >> 24), ((ip) >> 16) & 0xff, ((ip) >> 8) & 0xff, (ip) & 0xff
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| 18 | #define IP4_ADDR_PRINTF_FORMAT "%u.%u.%u.%u"
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| 19 | /*
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| 20 | * Dump a packet in the same format as tcpdump -x
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| 21 | */
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| 22 | #ifdef DEBUG
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| 23 | void
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| 24 | dump_packet(void *dat, int n)
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| 25 | {
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| 26 | Log(("nat: PACKET DUMPED:\n%.*Vhxd\n", n, dat));
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| 27 | }
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| 28 | #endif
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| 29 |
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| 30 | #ifdef LOG_ENABLED
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| 31 | static void
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| 32 | lprint(const char *pszFormat, ...)
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| 33 | {
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| 34 | va_list args;
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| 35 | va_start(args, pszFormat);
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| 36 | RTLogPrintfV(pszFormat, args);
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| 37 | va_end(args);
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| 38 | }
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| 39 |
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| 40 | void
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| 41 | ipstats(PNATState pData)
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| 42 | {
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| 43 | lprint(" \n");
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| 44 |
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| 45 | lprint("IP stats:\n");
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| 46 | lprint(" %6d total packets received (%d were unaligned)\n",
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| 47 | ipstat.ips_total, ipstat.ips_unaligned);
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| 48 | lprint(" %6d with incorrect version\n", ipstat.ips_badvers);
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| 49 | lprint(" %6d with bad header checksum\n", ipstat.ips_badsum);
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| 50 | lprint(" %6d with length too short (len < sizeof(iphdr))\n", ipstat.ips_tooshort);
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| 51 | lprint(" %6d with length too small (len < ip->len)\n", ipstat.ips_toosmall);
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| 52 | lprint(" %6d with bad header length\n", ipstat.ips_badhlen);
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| 53 | lprint(" %6d with bad packet length\n", ipstat.ips_badlen);
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| 54 | lprint(" %6d fragments received\n", ipstat.ips_fragments);
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| 55 | lprint(" %6d fragments dropped\n", ipstat.ips_fragdropped);
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| 56 | lprint(" %6d fragments timed out\n", ipstat.ips_fragtimeout);
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| 57 | lprint(" %6d packets reassembled ok\n", ipstat.ips_reassembled);
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| 58 | lprint(" %6d outgoing packets fragmented\n", ipstat.ips_fragmented);
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| 59 | lprint(" %6d total outgoing fragments\n", ipstat.ips_ofragments);
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| 60 | lprint(" %6d with bad protocol field\n", ipstat.ips_noproto);
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| 61 | lprint(" %6d total packets delivered\n", ipstat.ips_delivered);
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| 62 | }
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| 63 |
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| 64 | void
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| 65 | tcpstats(PNATState pData)
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| 66 | {
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| 67 | lprint(" \n");
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| 68 |
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| 69 | lprint("TCP stats:\n");
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| 70 |
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| 71 | lprint(" %6d packets sent\n", tcpstat.tcps_sndtotal);
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| 72 | lprint(" %6d data packets (%d bytes)\n",
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| 73 | tcpstat.tcps_sndpack, tcpstat.tcps_sndbyte);
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| 74 | lprint(" %6d data packets retransmitted (%d bytes)\n",
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| 75 | tcpstat.tcps_sndrexmitpack, tcpstat.tcps_sndrexmitbyte);
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| 76 | lprint(" %6d ack-only packets (%d delayed)\n",
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| 77 | tcpstat.tcps_sndacks, tcpstat.tcps_delack);
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| 78 | lprint(" %6d URG only packets\n", tcpstat.tcps_sndurg);
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| 79 | lprint(" %6d window probe packets\n", tcpstat.tcps_sndprobe);
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| 80 | lprint(" %6d window update packets\n", tcpstat.tcps_sndwinup);
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| 81 | lprint(" %6d control (SYN/FIN/RST) packets\n", tcpstat.tcps_sndctrl);
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| 82 | lprint(" %6d times tcp_output did nothing\n", tcpstat.tcps_didnuttin);
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| 83 |
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| 84 | lprint(" %6d packets received\n", tcpstat.tcps_rcvtotal);
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| 85 | lprint(" %6d acks (for %d bytes)\n",
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| 86 | tcpstat.tcps_rcvackpack, tcpstat.tcps_rcvackbyte);
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| 87 | lprint(" %6d duplicate acks\n", tcpstat.tcps_rcvdupack);
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| 88 | lprint(" %6d acks for unsent data\n", tcpstat.tcps_rcvacktoomuch);
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| 89 | lprint(" %6d packets received in sequence (%d bytes)\n",
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| 90 | tcpstat.tcps_rcvpack, tcpstat.tcps_rcvbyte);
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| 91 | lprint(" %6d completely duplicate packets (%d bytes)\n",
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| 92 | tcpstat.tcps_rcvduppack, tcpstat.tcps_rcvdupbyte);
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| 93 |
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| 94 | lprint(" %6d packets with some duplicate data (%d bytes duped)\n",
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| 95 | tcpstat.tcps_rcvpartduppack, tcpstat.tcps_rcvpartdupbyte);
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| 96 | lprint(" %6d out-of-order packets (%d bytes)\n",
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| 97 | tcpstat.tcps_rcvoopack, tcpstat.tcps_rcvoobyte);
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| 98 | lprint(" %6d packets of data after window (%d bytes)\n",
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| 99 | tcpstat.tcps_rcvpackafterwin, tcpstat.tcps_rcvbyteafterwin);
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| 100 | lprint(" %6d window probes\n", tcpstat.tcps_rcvwinprobe);
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| 101 | lprint(" %6d window update packets\n", tcpstat.tcps_rcvwinupd);
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| 102 | lprint(" %6d packets received after close\n", tcpstat.tcps_rcvafterclose);
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| 103 | lprint(" %6d discarded for bad checksums\n", tcpstat.tcps_rcvbadsum);
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| 104 | lprint(" %6d discarded for bad header offset fields\n",
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| 105 | tcpstat.tcps_rcvbadoff);
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| 106 |
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| 107 | lprint(" %6d connection requests\n", tcpstat.tcps_connattempt);
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| 108 | lprint(" %6d connection accepts\n", tcpstat.tcps_accepts);
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| 109 | lprint(" %6d connections established (including accepts)\n", tcpstat.tcps_connects);
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| 110 | lprint(" %6d connections closed (including %d drop)\n",
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| 111 | tcpstat.tcps_closed, tcpstat.tcps_drops);
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| 112 | lprint(" %6d embryonic connections dropped\n", tcpstat.tcps_conndrops);
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| 113 | lprint(" %6d segments we tried to get rtt (%d succeeded)\n",
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| 114 | tcpstat.tcps_segstimed, tcpstat.tcps_rttupdated);
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| 115 | lprint(" %6d retransmit timeouts\n", tcpstat.tcps_rexmttimeo);
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| 116 | lprint(" %6d connections dropped by rxmt timeout\n",
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| 117 | tcpstat.tcps_timeoutdrop);
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| 118 | lprint(" %6d persist timeouts\n", tcpstat.tcps_persisttimeo);
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| 119 | lprint(" %6d keepalive timeouts\n", tcpstat.tcps_keeptimeo);
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| 120 | lprint(" %6d keepalive probes sent\n", tcpstat.tcps_keepprobe);
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| 121 | lprint(" %6d connections dropped by keepalive\n", tcpstat.tcps_keepdrops);
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| 122 | lprint(" %6d correct ACK header predictions\n", tcpstat.tcps_predack);
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| 123 | lprint(" %6d correct data packet header predictions\n", tcpstat.tcps_preddat);
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| 124 | lprint(" %6d TCP cache misses\n", tcpstat.tcps_socachemiss);
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| 125 |
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| 126 | /* lprint(" Packets received too short: %d\n", tcpstat.tcps_rcvshort); */
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| 127 | /* lprint(" Segments dropped due to PAWS: %d\n", tcpstat.tcps_pawsdrop); */
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| 128 |
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| 129 | }
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| 130 |
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| 131 | void
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| 132 | udpstats(PNATState pData)
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| 133 | {
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| 134 | lprint(" \n");
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| 135 |
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| 136 | lprint("UDP stats:\n");
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| 137 | lprint(" %6d datagrams received\n", udpstat.udps_ipackets);
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| 138 | lprint(" %6d with packets shorter than header\n", udpstat.udps_hdrops);
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| 139 | lprint(" %6d with bad checksums\n", udpstat.udps_badsum);
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| 140 | lprint(" %6d with data length larger than packet\n", udpstat.udps_badlen);
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| 141 | lprint(" %6d UDP socket cache misses\n", udpstat.udpps_pcbcachemiss);
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| 142 | lprint(" %6d datagrams sent\n", udpstat.udps_opackets);
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| 143 | }
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| 144 |
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| 145 | void
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| 146 | icmpstats(PNATState pData)
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| 147 | {
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| 148 | lprint(" \n");
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| 149 | lprint("ICMP stats:\n");
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| 150 | lprint(" %6d ICMP packets received\n", icmpstat.icps_received);
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| 151 | lprint(" %6d were too short\n", icmpstat.icps_tooshort);
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| 152 | lprint(" %6d with bad checksums\n", icmpstat.icps_checksum);
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| 153 | lprint(" %6d with type not supported\n", icmpstat.icps_notsupp);
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| 154 | lprint(" %6d with bad type feilds\n", icmpstat.icps_badtype);
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| 155 | lprint(" %6d ICMP packets sent in reply\n", icmpstat.icps_reflect);
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| 156 | }
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| 157 |
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| 158 | void
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| 159 | mbufstats(PNATState pData)
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| 160 | {
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| 161 | #ifndef VBOX_WITH_SLIRP_BSD_MBUF
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| 162 | struct mbuf *m;
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| 163 | int i;
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| 164 |
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| 165 | lprint(" \n");
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| 166 |
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| 167 | lprint("Mbuf stats:\n");
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| 168 |
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| 169 | lprint(" %6d mbufs allocated (%d max)\n", mbuf_alloced, mbuf_max);
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| 170 |
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| 171 | i = 0;
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| 172 | for (m = m_freelist.m_next; m != &m_freelist; m = m->m_next)
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| 173 | i++;
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| 174 | lprint(" %6d mbufs on free list\n", i);
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| 175 |
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| 176 | i = 0;
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| 177 | for (m = m_usedlist.m_next; m != &m_usedlist; m = m->m_next)
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| 178 | i++;
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| 179 | lprint(" %6d mbufs on used list\n", i);
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| 180 | lprint(" %6d mbufs queued as packets\n\n", if_queued);
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| 181 | #endif
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| 182 | }
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| 183 |
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| 184 | void
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| 185 | sockstats(PNATState pData)
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| 186 | {
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| 187 | char buff[256];
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| 188 | int n;
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| 189 | struct socket *so, *so_next;
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| 190 |
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| 191 | lprint(" \n");
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| 192 |
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| 193 | lprint(
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| 194 | "Proto[state] Sock Local Address, Port Remote Address, Port RecvQ SendQ\n");
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| 195 |
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| 196 | QSOCKET_FOREACH(so, so_next, tcp)
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| 197 | /* { */
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| 198 | n = RTStrPrintf(buff, sizeof(buff), "tcp[%s]", so->so_tcpcb?tcpstates[so->so_tcpcb->t_state]:"NONE");
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| 199 | while (n < 17)
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| 200 | buff[n++] = ' ';
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| 201 | buff[17] = 0;
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| 202 | lprint("%s %3d %15s %5d ",
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| 203 | buff, so->s, inet_ntoa(so->so_laddr), ntohs(so->so_lport));
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| 204 | lprint("%15s %5d %5d %5d\n",
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| 205 | inet_ntoa(so->so_faddr), ntohs(so->so_fport),
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| 206 | so->so_rcv.sb_cc, so->so_snd.sb_cc);
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| 207 | LOOP_LABEL(tcp, so, so_next);
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| 208 | }
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| 209 |
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| 210 | QSOCKET_FOREACH(so, so_next, udp)
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| 211 | /* { */
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| 212 | n = RTStrPrintf(buff, sizeof(buff), "udp[%d sec]", (so->so_expire - curtime) / 1000);
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| 213 | while (n < 17)
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| 214 | buff[n++] = ' ';
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| 215 | buff[17] = 0;
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| 216 | lprint("%s %3d %15s %5d ",
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| 217 | buff, so->s, inet_ntoa(so->so_laddr), ntohs(so->so_lport));
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| 218 | lprint("%15s %5d %5d %5d\n",
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| 219 | inet_ntoa(so->so_faddr), ntohs(so->so_fport),
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| 220 | so->so_rcv.sb_cc, so->so_snd.sb_cc);
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| 221 | LOOP_LABEL(udp, so, so_next);
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| 222 | }
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| 223 | }
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| 224 | #endif
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| 225 |
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| 226 | static DECLCALLBACK(size_t)
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| 227 | print_ipv4_address(PFNRTSTROUTPUT pfnOutput, void *pvArgOutput,
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| 228 | const char *pszType, void const *pvValue,
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| 229 | int cchWidth, int cchPrecision, unsigned fFlags,
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| 230 | void *pvUser)
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| 231 | {
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| 232 | uint32_t ip;
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| 233 |
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| 234 | AssertReturn(strcmp(pszType, "IP4") == 0, 0);
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| 235 |
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| 236 | ip = ntohl(*(uint32_t*)pvValue);
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| 237 | return RTStrFormat(pfnOutput, pvArgOutput, NULL, 0, IP4_ADDR_PRINTF_FORMAT,
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| 238 | IP4_ADDR_PRINTF_DECOMP(ip));
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| 239 | }
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| 240 |
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| 241 | static DECLCALLBACK(size_t)
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| 242 | print_ether_address(PFNRTSTROUTPUT pfnOutput, void *pvArgOutput,
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| 243 | const char *pszType, void const *pvValue,
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| 244 | int cchWidth, int cchPrecision, unsigned fFlags,
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| 245 | void *pvUser)
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| 246 | {
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| 247 | char *ether = (char *)pvUser;
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| 248 |
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| 249 | AssertReturn(strcmp(pszType, "ether") == 0, 0);
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| 250 | if (ether != NULL)
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| 251 | return RTStrFormat(pfnOutput, pvArgOutput, NULL, 0,
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| 252 | "[ether %hhx:%hhx:%hhx:%hhx:%hhx:%hhx]",
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| 253 | ether[0], ether[1], ether[2],
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| 254 | ether[3], ether[4], ether[5]);
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| 255 | else
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| 256 | return RTStrFormat(pfnOutput, pvArgOutput, NULL, 0, "[ether null]");
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| 257 | }
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| 258 |
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| 259 | static DECLCALLBACK(size_t)
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| 260 | print_socket(PFNRTSTROUTPUT pfnOutput, void *pvArgOutput,
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| 261 | const char *pszType, void const *pvValue,
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| 262 | int cchWidth, int cchPrecision, unsigned fFlags,
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| 263 | void *pvUser)
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| 264 | {
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| 265 | struct socket *so = (struct socket*)pvValue;
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| 266 | uint32_t ip;
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| 267 | struct sockaddr addr;
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| 268 | struct sockaddr_in *in_addr;
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| 269 | socklen_t socklen = sizeof(struct sockaddr);
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| 270 | int status = 0;
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| 271 |
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| 272 | AssertReturn(strcmp(pszType, "natsock") == 0, 0);
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| 273 | if (so == NULL)
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| 274 | return RTStrFormat(pfnOutput, pvArgOutput, NULL, 0,
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| 275 | "socket is null");
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| 276 | if (so->so_state == SS_NOFDREF || so->s == -1)
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| 277 | return RTStrFormat(pfnOutput, pvArgOutput, NULL, 0,
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| 278 | "socket(%d) SS_NODREF",so->s);
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| 279 | status = getsockname(so->s, &addr, &socklen);
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| 280 |
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| 281 | if(status != 0 || addr.sa_family != AF_INET)
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| 282 | {
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| 283 | return RTStrFormat(pfnOutput, pvArgOutput, NULL, 0,
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| 284 | "socket(%d) is invalid(probably closed)",so->s);
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| 285 | }
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| 286 |
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| 287 | in_addr = (struct sockaddr_in *)&addr;
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| 288 | ip = ntohl(so->so_faddr.s_addr);
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| 289 | return RTStrFormat(pfnOutput, pvArgOutput, NULL, 0, "socket %4d:(proto:%u) "
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| 290 | "state=%04x ip=" IP4_ADDR_PRINTF_FORMAT ":%d "
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| 291 | "name=" IP4_ADDR_PRINTF_FORMAT ":%d",
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| 292 | so->s, so->so_type, so->so_state, IP4_ADDR_PRINTF_DECOMP(ip),
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| 293 | ntohs(so->so_fport),
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| 294 | IP4_ADDR_PRINTF_DECOMP(ntohl(in_addr->sin_addr.s_addr)),
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| 295 | ntohs(in_addr->sin_port));
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| 296 | }
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| 297 |
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| 298 | static DECLCALLBACK(size_t)
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| 299 | print_networkevents(PFNRTSTROUTPUT pfnOutput, void *pvArgOutput,
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| 300 | const char *pszType, void const *pvValue,
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| 301 | int cchWidth, int cchPrecision, unsigned fFlags,
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| 302 | void *pvUser)
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| 303 | {
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| 304 | size_t cb = 0;
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| 305 | #ifdef RT_OS_WINDOWS
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| 306 | WSANETWORKEVENTS *pNetworkEvents = (WSANETWORKEVENTS*)pvValue;
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| 307 | bool fDelim = false;
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| 308 |
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| 309 | AssertReturn(strcmp(pszType, "natwinnetevents") == 0, 0);
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| 310 |
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| 311 | cb += RTStrFormat(pfnOutput, pvArgOutput, NULL, 0, "events=%02x (",
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| 312 | pNetworkEvents->lNetworkEvents);
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| 313 | # define DO_BIT(bit) \
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| 314 | if (pNetworkEvents->lNetworkEvents & FD_ ## bit) \
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| 315 | { \
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| 316 | cb += RTStrFormat(pfnOutput, pvArgOutput, NULL, 0, \
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| 317 | "%s" #bit "(%d)", fDelim ? "," : "", \
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| 318 | pNetworkEvents->iErrorCode[FD_ ## bit ## _BIT]); \
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| 319 | fDelim = true; \
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| 320 | }
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| 321 | DO_BIT(READ);
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| 322 | DO_BIT(WRITE);
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| 323 | DO_BIT(OOB);
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| 324 | DO_BIT(ACCEPT);
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| 325 | DO_BIT(CONNECT);
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| 326 | DO_BIT(CLOSE);
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| 327 | DO_BIT(QOS);
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| 328 | # undef DO_BIT
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| 329 | cb += RTStrFormat(pfnOutput, pvArgOutput, NULL, 0, ")");
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| 330 | #endif
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| 331 | return cb;
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| 332 | }
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| 333 |
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| 334 | #if 0
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| 335 | /*
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| 336 | * Debugging
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| 337 | */
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| 338 | int errno_func(const char *file, int line)
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| 339 | {
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| 340 | int err = WSAGetLastError();
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| 341 | LogRel(("errno=%d (%s:%d)\n", err, file, line));
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| 342 | return err;
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| 343 | }
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| 344 | #endif
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| 345 |
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| 346 | int
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| 347 | debug_init()
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| 348 | {
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| 349 | int rc = VINF_SUCCESS;
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| 350 |
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| 351 | static int g_fFormatRegistered;
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| 352 |
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| 353 | if (!g_fFormatRegistered)
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| 354 | {
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| 355 | /*
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| 356 | * XXX(r - frank): Move this to IPRT using RTNETADDRIPV4.
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| 357 | * Use the specifier %RNAipv4.
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| 358 | */
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| 359 | rc = RTStrFormatTypeRegister("IP4", print_ipv4_address, NULL);
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| 360 | AssertRC(rc);
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| 361 | rc = RTStrFormatTypeRegister("ether", print_ether_address, NULL);
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| 362 | AssertRC(rc);
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| 363 | rc = RTStrFormatTypeRegister("natsock", print_socket, NULL);
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| 364 | AssertRC(rc);
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| 365 | rc = RTStrFormatTypeRegister("natwinnetevents",
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| 366 | print_networkevents, NULL);
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| 367 | AssertRC(rc);
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| 368 | g_fFormatRegistered = 1;
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| 369 | }
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| 370 |
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| 371 | return rc;
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| 372 | }
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