From c7e7b62aa94bf295ca1dc556762ad6070221e0cd Mon Sep 17 00:00:00 2001
From: Eugenio Favalli <elvenprogrammer@gmail.com>
Date: Tue, 25 Jul 2006 18:04:38 +0000
Subject: Switched client to use enet and modified login sequence to work with
 the new protocol from tmwserv.

---
 src/net/messagein.cpp | 171 ++++++++++++--------------------------------------
 1 file changed, 39 insertions(+), 132 deletions(-)

(limited to 'src/net/messagein.cpp')

diff --git a/src/net/messagein.cpp b/src/net/messagein.cpp
index bbc0a44c..7e85a813 100644
--- a/src/net/messagein.cpp
+++ b/src/net/messagein.cpp
@@ -1,5 +1,5 @@
 /*
- *  The Mana World
+ *  The Mana World Server
  *  Copyright 2004 The Mana World Development Team
  *
  *  This file is part of The Mana World.
@@ -23,14 +23,11 @@
 
 #include "messagein.h"
 
-#include <cassert>
-#include <SDL.h>
-#include <SDL_endian.h>
+#include <string>
 
-#define MAKEWORD(low,high) \
-    ((unsigned short)(((unsigned char)(low)) | \
-    ((unsigned short)((unsigned char)(high))) << 8))
+#include <enet/enet.h>
 
+#include "packet.h"
 
 MessageIn::MessageIn(const char *data, unsigned int length):
     mData(data),
@@ -38,157 +35,67 @@ MessageIn::MessageIn(const char *data, unsigned int length):
     mPos(0)
 {
     // Read the message ID
-    mId = readInt16();
+    mId = readShort();
 }
 
-Sint8
-MessageIn::readInt8()
+MessageIn::~MessageIn()
 {
-    assert(mPos < mLength);
-    return mData[mPos++];
 }
 
-Sint16
-MessageIn::readInt16()
+char MessageIn::readByte()
 {
-    assert(mPos + 2 <= mLength);
-    mPos += 2;
-#if SDL_BYTEORDER == SDL_BIG_ENDIAN
-    return SDL_Swap16(*(Sint16*)(mData + (mPos - 2)));
-#else
-    return (*(Sint16*)(mData + (mPos - 2)));
-#endif
-}
-
-Sint32
-MessageIn::readInt32()
-{
-    assert(mPos + 4 <= mLength);
-    mPos += 4;
-#if SDL_BYTEORDER == SDL_BIG_ENDIAN
-    return SDL_Swap32(*(Sint32*)(mData + (mPos - 4)));
-#else
-    return (*(Sint32*)(mData + (mPos - 4)));
-#endif
-}
-
-void
-MessageIn::readCoordinates(Uint16 &x, Uint16 &y, Uint8 &direction)
-{
-    assert(mPos + 3 <= mLength);
-
-    const char *data = mData + mPos;
-    Sint16 temp;
-
-    temp = MAKEWORD(data[1] & 0x00c0, data[0] & 0x00ff);
-    x = temp >> 6;
-    temp = MAKEWORD(data[2] & 0x00f0, data[1] & 0x003f);
-    y = temp >> 4;
-
-    direction = data[2] & 0x000f;
-
-    // Translate from eAthena format
-    switch (direction)
+    char value = -1;
+    if (mPos < mLength)
     {
-        case 0:
-            direction = 1;
-            break;
-        case 1:
-            direction = 3;
-            break;
-        case 2:
-            direction = 2;
-            break;
-        case 3:
-            direction = 6;
-            break;
-        case 4:
-            direction = 4;
-            break;
-        case 5:
-            direction = 12;
-            break;
-        case 6:
-            direction = 8;
-            break;
-        case 7:
-            direction = 9;
-            break;
-        default:
-            // OOPSIE! Impossible or unknown
-            direction = 0;
+        value = mData[mPos];
     }
-
-    mPos += 3;
+    mPos += 1;
+    return value;
 }
 
-void
-MessageIn::readCoordinatePair(Uint16 &srcX, Uint16 &srcY,
-                              Uint16 &dstX, Uint16 &dstY)
+short MessageIn::readShort()
 {
-    assert(mPos + 5 <= mLength);
-
-    const char *data = mData + mPos;
-    Sint16 temp;
-
-    temp = MAKEWORD(data[3], data[2] & 0x000f);
-    dstX = temp >> 2;
-
-    dstY = MAKEWORD(data[4], data[3] & 0x0003);
-
-    temp = MAKEWORD(data[1], data[0]);
-    srcX = temp >> 6;
-
-    temp = MAKEWORD(data[2], data[1] & 0x003f);
-    srcY = temp >> 4;
-
-    mPos += 5;
+    short value = -1;
+    if (mPos + 2 <= mLength)
+    {
+        uint16_t t;
+        memcpy(&t, mData + mPos, 2);
+        value = ENET_NET_TO_HOST_16(t);
+    }
+    mPos += 2;
+    return value;
 }
 
-void
-MessageIn::skip(unsigned int length)
+long MessageIn::readLong()
 {
-    assert(mPos + length <= mLength);
-    mPos += length;
+    long value = -1;
+    if (mPos + 4 <= mLength)
+    {
+        uint32_t t;
+        memcpy(&t, mData + mPos, 4);
+        value = ENET_NET_TO_HOST_32(t);
+    }
+    mPos += 4;
+    return value;
 }
 
-std::string
-MessageIn::readString(int length)
+std::string MessageIn::readString(int length)
 {
     // Get string length
     if (length < 0) {
-        length = readInt16();
+        length = readShort();
     }
 
-    // Make sure the string isn't erroneous
+    // Make sure the string isn't erroneus
     if (length < 0 || mPos + length > mLength) {
         mPos = mLength + 1;
         return "";
     }
 
-    // Read the string
-    char const *stringBeg = mData + mPos;
-    char const *stringEnd = (char const *)memchr(stringBeg, '\0', length);
-    std::string readString(stringBeg,
-                           stringEnd ? stringEnd - stringBeg : length);
+        // Read the string
+    char const *stringBeg = mData + mPos,
+               *stringEnd = (char const *)memchr(stringBeg, '\0', length);
+    std::string readString(stringBeg, stringEnd ? stringEnd - stringBeg : length);
     mPos += length;
     return readString;
 }
-
-Sint8& operator<<(Sint8 &lhs, MessageIn &msg)
-{
-    lhs = msg.readInt8();
-    return lhs;
-}
-
-Sint16& operator<<(Sint16 &lhs, MessageIn &msg)
-{
-    lhs = msg.readInt16();
-    return lhs;
-}
-
-Sint32& operator<<(Sint32 &lhs, MessageIn &msg)
-{
-    lhs = msg.readInt32();
-    return lhs;
-}
-- 
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