auto import from //depot/cupcake/@135843

1 files changed, 120 insertions, 0 deletions

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;
+}