From: Isira Seneviratne <isirasen96@gmail.com>
Subject: [PATCH] ping: Implemented -n functionality.
Message-Id: <CAOSTi2mfwUA0pfj8=n-xMZi_W5HGEGTXFhtTiEsmjMafDZg1TQ@mail.gmail.com>
Date: Sat, 17 Feb 2018 10:44:11 +0530

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From 11e36742f395e66b67c05f69af9f5fca44ade643 Mon Sep 17 00:00:00 2001
From: Isira Seneviratne <isirasen96@gmail.com>
Date: Sat, 17 Feb 2018 10:22:55 +0530
Subject: [PATCH] ping: Implemented -n functionality.

The program calls the Unix ping program with the passed parameters.

Tested on Arch Linux.

Signed-off-by: Isira Seneviratne <isirasen96@gmail.com>
---
 programs/ping/ping_main.c | 41 ++++++++++++++++++++++++++++++++++++++---
 1 file changed, 38 insertions(+), 3 deletions(-)

diff --git a/programs/ping/ping_main.c b/programs/ping/ping_main.c
index 997d953d2e..f3eca93597 100644
--- a/programs/ping/ping_main.c
+++ b/programs/ping/ping_main.c
@@ -22,6 +22,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
@@ -45,8 +46,6 @@ int main(int argc, char** argv)
     unsigned int n = 0;
     int optc;
 
-    WINE_FIXME( "this command currently just sleeps based on -n parameter\n" );
-
     while ((optc = getopt( argc, argv, "n:w:tal:fi:v:r:s:j:k:" )) != -1)
     {
         switch(optc)
@@ -70,7 +69,43 @@ int main(int argc, char** argv)
     }
 
     if (n != 0)
-      Sleep((n - 1) * 1000);
+    {
+        char *arg, **arg_ping, *str;
+        char ping[] = {'/','u','s','r','/','b','i','n','/','p','i','n','g', 0, 0};
+        int len = 0, i;
+        for(i = 0; i < argc; i++)
+            len += strlen(argv[i])+1;
+        arg = calloc(len, sizeof(char));
+        if(!arg)
+        {
+            printf("Unable to allocate memory for arg string.\n");
+            return 1;
+        }
+        arg_ping = calloc(argc, sizeof(char*));
+        if(!arg_ping)
+        {
+            printf("Unable to allocate memory for split arguments.\n");
+            return 1;
+        }
+        for(i = 0; i < argc; i++)
+        {
+            strncat(arg, " ", 1);
+            if(!strcmp(argv[i], "-n"))
+                strncat(arg, "-c", 2);
+            else
+                strncat(arg, argv[i], strlen(argv[i]));
+        }
+        str = strtok(arg, " ");
+        i = 0;
+        while(str)
+        {
+            arg_ping[i++] = str;
+            str = strtok(NULL, " ");
+        }
+        _spawnvp(_P_OVERLAY, ping, arg_ping);
+        free(arg);
+        free(arg_ping);
+    }
 
     return 0;
 }

-- 
2.16.1