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/*
* Copyright (c) 2008, The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google, Inc. nor the names of its contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
* COPYRIGHT OWNER 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 <stdio.h>
#include <stdlib.h>
typedef union iaddr iaddr;
union iaddr {
unsigned u;
unsigned char b[4];
};
static const char *state2str(unsigned state)
{
switch(state){
case 0x1: return "ESTABLISHED";
case 0x2: return "SYN_SENT";
case 0x3: return "SYN_RECV";
case 0x4: return "FIN_WAIT1";
case 0x5: return "FIN_WAIT2";
case 0x6: return "TIME_WAIT";
case 0x7: return "CLOSE";
case 0x8: return "CLOSE_WAIT";
case 0x9: return "LAST_ACK";
case 0xA: return "LISTEN";
case 0xB: return "CLOSING";
default: return "UNKNOWN";
}
}
void addr2str(iaddr addr, unsigned port, char *buf)
{
if(port) {
snprintf(buf, 64, "%d.%d.%d.%d:%d",
addr.b[0], addr.b[1], addr.b[2], addr.b[3], port);
} else {
snprintf(buf, 64, "%d.%d.%d.%d:*",
addr.b[0], addr.b[1], addr.b[2], addr.b[3]);
}
}
int netstat_main(int argc, char *argv[])
{
char buf[512];
char lip[64];
char rip[64];
iaddr laddr, raddr;
unsigned lport, rport, state, txq, rxq, num;
int n;
FILE *fp;
printf("Proto Recv-Q Send-Q Local Address Foreign Address State\n");
fp = fopen("/proc/net/tcp", "r");
if(fp != 0) {
fgets(buf, 512, fp);
while(fgets(buf, 512, fp)){
n = sscanf(buf, " %d: %x:%x %x:%x %x %x:%x",
&num, &laddr.u, &lport, &raddr.u, &rport,
&state, &txq, &rxq);
if(n == 8) {
addr2str(laddr, lport, lip);
addr2str(raddr, rport, rip);
printf("tcp %6d %6d %-22s %-22s %s\n",
txq, rxq, lip, rip,
state2str(state));
}
}
fclose(fp);
}
fp = fopen("/proc/net/udp", "r");
if(fp != 0) {
fgets(buf, 512, fp);
while(fgets(buf, 512, fp)){
n = sscanf(buf, " %d: %x:%x %x:%x %x %x:%x",
&num, &laddr.u, &lport, &raddr.u, &rport,
&state, &txq, &rxq);
if(n == 8) {
addr2str(laddr, lport, lip);
addr2str(raddr, rport, rip);
printf("udp %6d %6d %-22s %-22s\n",
txq, rxq, lip, rip);
}
}
fclose(fp);
}
return 0;
}
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