From 08a3c0b9979857e708865d2756ba057bb1c664ee Mon Sep 17 00:00:00 2001
From: Reiner Herrmann <reiner@reiner-h.de>
Date: Sun, 16 Jan 2011 03:36:43 +0100
Subject: moved generic recv function to new file; use payload length inside
 packets instead of packet length

---
 src/net_client.c | 64 ++++++++------------------------------------------------
 1 file changed, 9 insertions(+), 55 deletions(-)

(limited to 'src/net_client.c')

diff --git a/src/net_client.c b/src/net_client.c
index 031e6af..9134cf7 100644
--- a/src/net_client.c
+++ b/src/net_client.c
@@ -27,7 +27,7 @@ void client_hello(int sock, const char* username)
 	}
 
 	buf[NET_MSG_OFFSET_TYPE] = msg_type_hello;
-	buf[NET_MSG_OFFSET_PAYLOAD_LENGTH] = namelen+2;
+	buf[NET_MSG_OFFSET_PAYLOAD_LENGTH] = namelen;
 	memcpy(buf+NET_MSG_OFFSET_PAYLOAD, username, namelen);
 
 	send(sock, buf, namelen+2, 0);
@@ -83,15 +83,10 @@ int client_connect_server(const char* host, const char* port)
 	return sock;
 }
 
-static player_list* client_recv_player_list(int sock, uint8_t data_len)
+player_list* client_recv_player_list(const uint8_t* payload, const uint8_t data_len)
 {
-	uint8_t buf[data_len];
 	player_list* players;
-	uint32_t pos;
-
-	recv(sock, buf, data_len, 0);
-
-	assert(buf[NET_MSG_OFFSET_TYPE] == msg_type_start_game);
+	uint32_t pos = 0;
 
 	players = create_playerlist();
 	if(players == NULL)
@@ -100,15 +95,14 @@ static player_list* client_recv_player_list(int sock, uint8_t data_len)
 		exit(EXIT_FAILURE);
 	}
 
-	pos = NET_MSG_OFFSET_PAYLOAD;
-	players->count = buf[pos++];
+	players->count = payload[pos++];
 
 	// read usernames from buffer
 	for(int i=0; i<players->count; i++)
 	{
-		uint8_t namelen = buf[pos++];
+		uint8_t namelen = payload[pos++];
 		players->names[i] = malloc(namelen+1);
-		memcpy(players->names[i], buf+pos, namelen);
+		memcpy(players->names[i], payload+pos, namelen);
 		players->names[i][namelen] = '\0';
 		pos += namelen;
 	}
@@ -116,55 +110,15 @@ static player_list* client_recv_player_list(int sock, uint8_t data_len)
 	return players;
 }
 
-static hand* client_recv_deal_cards(int sock, uint8_t data_len)
+hand* client_recv_deal_cards(const uint8_t* payload, const uint8_t payload_len)
 {
-	uint8_t buf[data_len];
 	hand* h = malloc(sizeof(hand));
 
-	assert(data_len == 2+MAX_HAND_CARDS); // deal_cards packet have fixed size
-
-	recv(sock, buf, data_len, 0);
-
-	assert(buf[NET_MSG_OFFSET_TYPE] == msg_type_deal_cards);
+	assert(payload_len == MAX_HAND_CARDS); // deal_cards packet have fixed size
 
 	for(int i=0; i<MAX_HAND_CARDS; i++)
-		*h[i] = (card) buf[i+2];
+		*h[i] = payload[i];
 
 	return h;
 }
 
-/**
- * Client side function; generic function for receiving packets
- * @param[in] sock Socket on which to receive
- * @param[in] wanted Desired packet type
- * @return Pointer to desired data
- */
-void* client_recv(int sock, msg_type_t wanted)
-{
-	void* result = NULL;
-	uint8_t buf[10], type, data_len;
-	ssize_t len = recv(sock, buf, 10, MSG_PEEK); // just peek into packet to determine type
-
-	assert(len != -1);
-
-	type = buf[NET_MSG_OFFSET_TYPE];
-	data_len = buf[NET_MSG_OFFSET_PAYLOAD_LENGTH];
-	if(type != wanted)
-	{
-		printf("client_recv: received type %d instead of %d", type, wanted);
-		return NULL;
-	}
-
-	switch(type)
-	{
-		case msg_type_start_game:
-			result = client_recv_player_list(sock, data_len);
-			break;
-		case msg_type_deal_cards:
-			result = client_recv_deal_cards(sock, data_len);
-			break;
-	}
-
-	return result;
-}
-
-- 
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