From 82b4df67514f258976152031fce44b9dfe249435 Mon Sep 17 00:00:00 2001
From: erdgeist <>
Date: Fri, 15 Dec 2006 23:28:23 +0000
Subject: Make code endianess save

---
 opentracker.c  | 18 ++++++++++--------
 trackerlogic.c | 14 ++++++--------
 trackerlogic.h |  7 +++++--
 3 files changed, 21 insertions(+), 18 deletions(-)

diff --git a/opentracker.c b/opentracker.c
index 1139b9e..b20a4dc 100644
--- a/opentracker.c
+++ b/opentracker.c
@@ -114,6 +114,7 @@ void httpresponse(struct http_data* h,int64 s)
     ot_torrent *torrent;
     ot_hash    *hash = NULL;
     int         numwant, tmp, scanon;
+    unsigned short port = htons(6881);
     size_t      reply_size = 0;
 
     array_cat0(&h->r);
@@ -187,8 +188,9 @@ e400:
       if( byte_diff(data,8,"announce"))
         goto e404;
 
-      peer.ip = h->ip;
-      peer.port_flags = 6881 << 16;
+      OT_SETIP( &peer, &h->ip);
+      OT_SETPORT( &peer, &port );
+      OT_FLAG( &peer ) = 0;
       numwant = 50;
       scanon = 1;
 
@@ -202,12 +204,12 @@ e400:
         case 4:
           if(!byte_diff(data,4,"port")) {
             size_t len = scan_urlencoded_query( &c, data = c, SCAN_SEARCHPATH_VALUE );
-            if( ( len <= 0 ) || scan_fixed_int( data, len, &tmp ) || (tmp > 65536) ) goto e404;
-            peer.port_flags = ( tmp << 16 ) | ( peer.port_flags & 0xffff );
+            if( ( len <= 0 ) || scan_fixed_int( data, len, &tmp ) || ( tmp > 0xffff ) ) goto e404;
+            port = htons( tmp ); OT_SETPORT ( &peer, &port );
           } else if(!byte_diff(data,4,"left")) {
             size_t len = scan_urlencoded_query( &c, data = c, SCAN_SEARCHPATH_VALUE );
             if( ( len <= 0 ) || scan_fixed_int( data, len, &tmp ) ) goto e404;
-            if( !tmp ) peer.port_flags |= PEER_FLAG_SEEDING;
+            if( !tmp ) OT_FLAG( &peer ) |= PEER_FLAG_SEEDING;
           } else
             scan_urlencoded_query( &c, NULL, SCAN_SEARCHPATH_VALUE );
           break;
@@ -218,10 +220,10 @@ e400:
           case -1:
             goto e404;
           case 7:
-            if(!byte_diff(data,7,"stopped")) peer.port_flags |= PEER_FLAG_STOPPED;
+            if(!byte_diff(data,7,"stopped")) OT_FLAG( &peer ) |= PEER_FLAG_STOPPED;
             break;
           case 9:
-            if(!byte_diff(data,9,"complete")) peer.port_flags |= PEER_FLAG_COMPLETED;
+            if(!byte_diff(data,9,"complete")) OT_FLAG( &peer ) |= PEER_FLAG_COMPLETED;
           default: // Fall through intended
             break;
           }
@@ -263,7 +265,7 @@ e400:
       /* Scanned whole query string */
       if( !hash ) goto e404;
 
-      if( peer.port_flags & PEER_FLAG_STOPPED ) {
+      if( OT_FLAG( &peer ) & PEER_FLAG_STOPPED ) {
         remove_peer_from_torrent( hash, &peer );
         reply = strdup( "d15:warning message4:Okaye" ); reply_size = 26;
       } else {
diff --git a/trackerlogic.c b/trackerlogic.c
index e9b9b2e..7b3c5db 100644
--- a/trackerlogic.c
+++ b/trackerlogic.c
@@ -18,9 +18,7 @@
 // Helper functions for binary_find
 //
 int compare_hash( const void *hash1, const void *hash2 ) { return memcmp( hash1, hash2, sizeof( ot_hash )); }
-int compare_ip_port( const void *peer1, const void *peer2 ) {
-if( ((ot_peer*)peer1)->ip != ((ot_peer*)peer2)->ip ) return ((ot_peer*)peer1)->ip - ((ot_peer*)peer2)->ip;
-return ((ot_peer*)peer1)->port_flags - ((ot_peer*)peer2)->port_flags; }
+int compare_ip_port( const void *peer1, const void *peer2 ) { return memcmp( peer1, peer2, 6 ); }
 
 static void *binary_search( const void *key, const void *base,
   unsigned long member_count, const unsigned long member_size,
@@ -82,7 +80,7 @@ static int vector_remove_peer( ot_vector *vector, ot_peer *peer ) {
   match = BINARY_FIND( peer, vector->data, vector->size, sizeof( ot_peer ), compare_ip_port, &exactmatch );
 
   if( !exactmatch ) return 0;
-  exactmatch = match->port_flags & PEER_FLAG_SEEDING ? 2 : 1;
+  exactmatch = OT_FLAG( match ) & PEER_FLAG_SEEDING ? 2 : 1;
   MEMMOVE( match, match + 1, ((ot_peer*)vector->data) + vector->size - match - 1 );
   vector->size--;
   return exactmatch;
@@ -164,7 +162,7 @@ ot_torrent *add_peer_to_torrent( ot_hash *hash, ot_peer *peer ) {
   if( !exactmatch ) {
     int i;
     MEMMOVE( peer_dest, peer, sizeof( ot_peer ) );
-    if( peer->port_flags & PEER_FLAG_SEEDING )
+    if( OT_FLAG(peer) & PEER_FLAG_SEEDING )
       torrent->peer_list->seed_count[0]++;
     for( i=1; i<OT_POOLS_COUNT; ++i ) {
       switch( vector_remove_peer( &torrent->peer_list->peers[i], peer ) ) {
@@ -174,12 +172,12 @@ ot_torrent *add_peer_to_torrent( ot_hash *hash, ot_peer *peer ) {
       }
     }
   } else {
-    if( (peer_dest->port_flags & PEER_FLAG_SEEDING ) && !(peer->port_flags & PEER_FLAG_SEEDING ) )
+    if( (OT_FLAG(peer_dest) & PEER_FLAG_SEEDING ) && !(OT_FLAG(peer) & PEER_FLAG_SEEDING ) )
       torrent->peer_list->seed_count[0]--;
-    if( !(peer_dest->port_flags & PEER_FLAG_SEEDING ) && (peer->port_flags & PEER_FLAG_SEEDING ) )
+    if( !(OT_FLAG(peer_dest) & PEER_FLAG_SEEDING ) && (OT_FLAG(peer) & PEER_FLAG_SEEDING ) )
       torrent->peer_list->seed_count[0]++;
   }
-  if( peer->port_flags & PEER_FLAG_COMPLETED )
+  if( OT_FLAG(peer) & PEER_FLAG_COMPLETED )
     torrent->peer_list->downloaded++;
 
   return torrent;
diff --git a/trackerlogic.h b/trackerlogic.h
index 44bd744..1bd7228 100644
--- a/trackerlogic.h
+++ b/trackerlogic.h
@@ -39,13 +39,16 @@ typedef struct {
 } ot_vector;
 
 typedef struct {
-  ot_ip    ip;
-  ot_dword port_flags;
+  ot_byte data[8];
 } ot_peer;
 static const ot_byte PEER_FLAG_SEEDING   = 0x80;
 static const ot_byte PEER_FLAG_COMPLETED = 0x40;
 static const ot_byte PEER_FLAG_STOPPED   = 0x20;
 
+#define OT_SETIP( peer, ip ) MEMMOVE((peer),(ip),4);
+#define OT_SETPORT( peer, port ) MEMMOVE((peer),(port),2);
+#define OT_FLAG(peer) (((ot_byte*)(peer))[6])
+
 typedef struct {
   ot_time        base;
   unsigned long  seed_count[ OT_POOLS_COUNT ];
-- 
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