iphlpapi: Implement IcmpParseReplies().

dlls/iphlpapi/iphlpapi.spec

@@ -157,7 +157,7 @@
 @ stdcall Icmp6SendEcho2(ptr ptr ptr ptr ptr ptr ptr long ptr ptr long long)
 @ stdcall IcmpCloseHandle(ptr)
 @ stdcall IcmpCreateFile()
-@ stub IcmpParseReplies
+@ stdcall IcmpParseReplies(ptr long)
 @ stdcall IcmpSendEcho2Ex(ptr ptr ptr ptr long long ptr long ptr ptr long long)
 @ stdcall IcmpSendEcho2(ptr ptr ptr ptr long ptr long ptr ptr long long)
 @ stdcall IcmpSendEcho(ptr long ptr long ptr ptr long long)

dlls/iphlpapi/iphlpapi_main.c

@@ -2,6 +2,7 @@
  * iphlpapi dll implementation
  *
  * Copyright (C) 2003,2006 Juan Lang
+ * Copyright 2021 Huw Davies
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -4541,3 +4542,16 @@ DWORD WINAPI ParseNetworkString(const WCHAR *str, DWORD type,
 
     return ERROR_INVALID_PARAMETER;
 }
+
+/******************************************************************
+ *    IcmpParseReplies (IPHLPAPI.@)
+ */
+DWORD WINAPI IcmpParseReplies( void *reply, DWORD reply_size )
+{
+    ICMP_ECHO_REPLY *icmp_reply = reply;
+    DWORD num_pkts = icmp_reply->Reserved;
+
+    icmp_reply->Reserved = 0;
+    if (!num_pkts) SetLastError( icmp_reply->Status );
+    return num_pkts;
+}

dlls/iphlpapi/tests/iphlpapi.c

@@ -1043,20 +1043,40 @@ static void testIcmpSendEcho(void)
     IcmpCloseHandle(icmp);
 }
 
-/*
-still-to-be-tested NT4-onward functions:
-CreateIpForwardEntry
-DeleteIpForwardEntry
-CreateIpNetEntry
-DeleteIpNetEntry
-GetFriendlyIfIndex
-GetRTTAndHopCount
-SetIfEntry
-SetIpForwardEntry
-SetIpNetEntry
-SetIpStatistics
-SetIpTTL
-*/
+static void testIcmpParseReplies( void )
+{
+    ICMP_ECHO_REPLY reply = { 0 };
+    DWORD ret;
+
+    SetLastError( 0xdeadbeef );
+    ret = IcmpParseReplies( &reply, sizeof(reply) );
+    ok( ret == 0, "ret %d\n", ret );
+    ok( GetLastError() == 0, "gle %d\n", GetLastError() );
+
+    reply.Status = 12345;
+    SetLastError( 0xdeadbeef );
+    ret = IcmpParseReplies( &reply, sizeof(reply) );
+    ok( ret == 0, "ret %d\n", ret );
+    ok( GetLastError() == 12345, "gle %d\n", GetLastError() );
+    ok( reply.Status == 12345, "status %d\n", reply.Status );
+
+    reply.Reserved = 1;
+    SetLastError( 0xdeadbeef );
+    ret = IcmpParseReplies( &reply, sizeof(reply) );
+    ok( ret == 1, "ret %d\n", ret );
+    ok( GetLastError() == 0xdeadbeef, "gle %d\n", GetLastError() );
+    ok( reply.Status == 12345, "status %d\n", reply.Status );
+    ok( !reply.Reserved, "reserved %d\n", reply.Reserved );
+
+    reply.Reserved = 3;
+    SetLastError( 0xdeadbeef );
+    ret = IcmpParseReplies( &reply, sizeof(reply) );
+    ok( ret == 3, "ret %d\n", ret );
+    ok( GetLastError() == 0xdeadbeef, "gle %d\n", GetLastError() );
+    ok( reply.Status == 12345, "status %d\n", reply.Status );
+    ok( !reply.Reserved, "reserved %d\n", reply.Reserved );
+}
+
 static void testWinNT4Functions(void)
 {
   testGetNumberOfInterfaces();
@@ -1076,6 +1096,7 @@ static void testWinNT4Functions(void)
   testGetUdpTable();
   testSetTcpEntry();
   testIcmpSendEcho();
+  testIcmpParseReplies();
 }
 
 static void testGetInterfaceInfo(void)