auto import from //depot/cupcake/@135843
diff --git a/toolbox/netstat.c b/toolbox/netstat.c
new file mode 100644
index 0000000..6404309
--- /dev/null
+++ b/toolbox/netstat.c
@@ -0,0 +1,120 @@
+/*
+ * 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;
+}