[fireball] 54742: [RTL] - Samuel Serapion: Implement RtlIpv4AddressToStringEx A/W and minor enhancements RtlIpv4AddressToStringA/W. Fixes some ntdll:rtl winetests. See issue #6779 for more details.

Author: fireball
Date: Fri Dec 23 20:40:02 2011
New Revision: 54742

URL: http://svn.reactos.org/svn/reactos?rev=54742&view=rev
Log:
[RTL]
- Samuel Serapion: Implement RtlIpv4AddressToStringEx A/W and minor enhancements RtlIpv4AddressToStringA/W. Fixes some ntdll:rtl winetests.
See issue #6779 for more details.

Modified:
    trunk/reactos/lib/rtl/network.c

Modified: trunk/reactos/lib/rtl/network.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/rtl/network.c?rev=54742...
==============================================================================
--- trunk/reactos/lib/rtl/network.c [iso-8859-1] (original)
+++ trunk/reactos/lib/rtl/network.c [iso-8859-1] Fri Dec 23 20:40:02 2011
@@ -12,6 +12,15 @@
 #define NDEBUG
 #include <debug.h>

+/* maximum length of an ipv4 address expressed as a string */
+#define IPV4_ADDR_STRING_MAX_LEN 16
+
+/* maximum length of an ipv4 port expressed as a string */
+#define IPV4_PORT_STRING_MAX_LEN 7 /* with the leading ':' */
+
+/* network to host order conversion for little endian machines */
+#define WN2H(w) (((w & 0xFF00) >> 8) | ((w & 0x00FF) << 8))
+
 /* FUNCTIONS ***************************************************************/

/*
@@ -22,19 +31,23 @@
 RtlIpv4AddressToStringA(IN struct in_addr *Addr,
                         OUT PCHAR S)
 {
-    CHAR Buffer[sizeof("255.255.255.255")];
+    CHAR Buffer[IPV4_ADDR_STRING_MAX_LEN];
     INT Length;
+
+    if(!S)
+        return NULL;
+
     Length = sprintf(Buffer, "%u.%u.%u.%u", Addr->S_un.S_un_b.s_b1,
                                             Addr->S_un.S_un_b.s_b2,
                                             Addr->S_un.S_un_b.s_b3,
                                             Addr->S_un.S_un_b.s_b4);
-    if (S)
-        strcpy(S, Buffer);
+
+    strcpy(S, Buffer);
     return S + Length;
 }

/*
- * @unimplemented
+ * @implemented
  */
 NTSTATUS
 NTAPI
@@ -43,8 +56,28 @@
                           OUT PCHAR AddressString,
                           IN OUT PULONG AddressStringLength)
 {
-    UNIMPLEMENTED;
-    return STATUS_NOT_IMPLEMENTED;
+    CHAR Buffer[IPV4_ADDR_STRING_MAX_LEN+IPV4_PORT_STRING_MAX_LEN];
+    ULONG Length;
+
+    if (!Address || !AddressString || !AddressStringLength)
+        return STATUS_INVALID_PARAMETER;
+
+    Length = sprintf(Buffer, "%u.%u.%u.%u", Address->S_un.S_un_b.s_b1,
+                                            Address->S_un.S_un_b.s_b2,
+                                            Address->S_un.S_un_b.s_b3,
+                                            Address->S_un.S_un_b.s_b4);
+
+    if (Port) Length += sprintf(Buffer + Length, ":%u", WN2H(Port));
+
+    if (*AddressStringLength > Length)
+    {
+        *AddressStringLength = Length + 1;
+        strcpy(AddressString, Buffer);
+        return STATUS_SUCCESS;
+    }
+
+    *AddressStringLength = Length + 1;
+    return STATUS_INVALID_PARAMETER;
 }

/*
@@ -55,14 +88,24 @@
 RtlIpv4AddressToStringW(IN struct in_addr *Addr,
                         OUT PWCHAR S)
 {
-    return S + swprintf(S, L"%u.%u.%u.%u", Addr->S_un.S_un_b.s_b1,
-                                           Addr->S_un.S_un_b.s_b2,
-                                           Addr->S_un.S_un_b.s_b3,
-                                           Addr->S_un.S_un_b.s_b4);
-}
-
-/*
- * @unimplemented
+    WCHAR Buffer[IPV4_ADDR_STRING_MAX_LEN];
+    INT Length;
+
+    if (!S)
+        return NULL;
+
+    Length = swprintf(Buffer, L"%u.%u.%u.%u", Addr->S_un.S_un_b.s_b1,
+                                              Addr->S_un.S_un_b.s_b2,
+                                              Addr->S_un.S_un_b.s_b3,
+                                              Addr->S_un.S_un_b.s_b4);
+
+    wcscpy(S, Buffer);
+
+    return S + Length;
+}
+
+/*
+ * @implemented
  */
 NTSTATUS
 NTAPI
@@ -71,8 +114,28 @@
                           OUT PWCHAR AddressString,
                           IN OUT PULONG AddressStringLength)
 {
-    UNIMPLEMENTED;
-    return STATUS_NOT_IMPLEMENTED;
+    WCHAR Buffer[IPV4_ADDR_STRING_MAX_LEN+IPV4_PORT_STRING_MAX_LEN];
+    ULONG Length;
+
+    if (!Address || !AddressString || !AddressStringLength)
+        return STATUS_INVALID_PARAMETER;
+
+    Length = swprintf(Buffer, L"%u.%u.%u.%u", Address->S_un.S_un_b.s_b1,
+                                              Address->S_un.S_un_b.s_b2,
+                                              Address->S_un.S_un_b.s_b3,
+                                              Address->S_un.S_un_b.s_b4);
+
+    if (Port) Length += swprintf(Buffer + Length, L":%u", WN2H(Port));
+
+    if (*AddressStringLength > Length)
+    {
+        *AddressStringLength = Length + 1;
+        wcscpy(AddressString, Buffer);
+        return STATUS_SUCCESS;
+    }
+
+    *AddressStringLength = Length + 1;
+    return STATUS_INVALID_PARAMETER;
 }

/*