From abe4e30256e4babacdec8837abafc3eb0a19e321 Mon Sep 17 00:00:00 2001
From: Timo Sirainen <cras@irssi.org>
Date: Mon, 11 Mar 2002 03:11:18 +0000
Subject: [PATCH] Safer flood protection for lines longer than 100 chars. Maybe
 even a bit too safe but generally you write lines less than 100 chars so it
 shouldn't really matter. Calculated (2 + line_length/100) in seconds.

git-svn-id: http://svn.irssi.org/repos/irssi/trunk@2575 dbcabf3a-b0e7-0310-adc4-f8d773084564
---
 src/irc/core/irc-servers.c | 37 ++++++++++++++++++++++++++-----------
 src/irc/core/irc-servers.h |  3 +++
 src/irc/core/irc.c         |  8 +-------
 3 files changed, 30 insertions(+), 18 deletions(-)

diff --git a/src/irc/core/irc-servers.c b/src/irc/core/irc-servers.c
index be6e1229..1fc7faaa 100644
--- a/src/irc/core/irc-servers.c
+++ b/src/irc/core/irc-servers.c
@@ -297,6 +297,28 @@ static void sig_server_quit(IRC_SERVER_REC *server, const char *msg)
 	g_free(str);
 }
 
+void irc_server_send_data(IRC_SERVER_REC *server, const char *data, int len)
+{
+	if (net_sendbuffer_send(server->handle, data, len) == -1) {
+		/* something bad happened */
+		server->connection_lost = TRUE;
+		return;
+	}
+
+	g_get_current_time(&server->last_cmd);
+
+	/* A bit kludgy way to do the flood protection. In ircnet, there
+	   actually is 1sec / 100 bytes penalty, but we rather want to deal
+	   with the max. 1000 bytes input buffer problem. If we send more
+	   than that with the burst, we'll get excess flooded. */
+	if (len < 100)
+		server->wait_cmd.tv_sec = 0;
+	else {
+		memcpy(&server->wait_cmd, &server->last_cmd, sizeof(GTimeVal));
+		server->wait_cmd.tv_sec += 2 + len/100;
+	}
+}
+
 static void server_cmd_timeout(IRC_SERVER_REC *server, GTimeVal *now)
 {
 	REDIRECT_REC *redirect;
@@ -321,20 +343,13 @@ static void server_cmd_timeout(IRC_SERVER_REC *server, GTimeVal *now)
 	server->cmdcount--;
 	if (server->cmdqueue == NULL) return;
 
-	/* send command */
+        /* get command */
 	cmd = server->cmdqueue->data;
         redirect = server->cmdqueue->next->data;
+
+	/* send command */
 	len = strlen(cmd);
-
-	if (net_sendbuffer_send(server->handle, cmd, len) == -1) {
-		/* something bad happened */
-		g_warning("net_sendbuffer_send() failed: %s",
-			  g_strerror(errno));
-		return;
-	}
-
-	server->wait_cmd.tv_sec = 0;
-	memcpy(&server->last_cmd, now, sizeof(GTimeVal));
+	irc_server_send_data(server, cmd, len);
 
 	/* add to rawlog without [CR+]LF (/RAWQUOTE might not have
 	   added the CR) */
diff --git a/src/irc/core/irc-servers.h b/src/irc/core/irc-servers.h
index b0cd84b5..f6ee1821 100644
--- a/src/irc/core/irc-servers.h
+++ b/src/irc/core/irc-servers.h
@@ -106,6 +106,9 @@ void irc_server_purge_output(IRC_SERVER_REC *server, const char *target);
    like "#a,#b,#c,#d x,b_chan_key,x,x" or just "#e,#f,#g" */
 char *irc_server_get_channels(IRC_SERVER_REC *server);
 
+/* INTERNAL: */
+void irc_server_send_data(IRC_SERVER_REC *server, const char *data, int len);
+
 void irc_servers_init(void);
 void irc_servers_deinit(void);
 
diff --git a/src/irc/core/irc.c b/src/irc/core/irc.c
index 88816404..d7afaa23 100644
--- a/src/irc/core/irc.c
+++ b/src/irc/core/irc.c
@@ -82,13 +82,7 @@ void irc_send_cmd_full(IRC_SERVER_REC *server, const char *cmd,
 	}
 
 	if (send_now) {
-		if (net_sendbuffer_send(server->handle, cmd, len) == -1) {
-			/* something bad happened */
-			server->connection_lost = TRUE;
-			return;
-		}
-
-		g_get_current_time(&server->last_cmd);
+                irc_server_send_data(server, cmd, len);
 		return;
 	}