From b6c85cc60b04bc75697a47a5a019e17d8dd47a47 Mon Sep 17 00:00:00 2001
From: Jilles Tjoelker <jilles@stack.nl>
Date: Fri, 8 May 2009 14:27:30 +0200
Subject: [PATCH] Disallow the sequence '",' in perm xlines, it would cause
 problems with xline.conf.

---
 modules/m_xline.c | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/modules/m_xline.c b/modules/m_xline.c
index d0fe3ed..f542ebd 100644
--- a/modules/m_xline.c
+++ b/modules/m_xline.c
@@ -70,7 +70,7 @@ struct Message unxline_msgtab = {
 mapi_clist_av1 xline_clist[] =  { &xline_msgtab, &unxline_msgtab, NULL };
 DECLARE_MODULE_AV1(xline, NULL, NULL, xline_clist, NULL, NULL, "$Revision: 3161 $");
 
-static int valid_xline(struct Client *, const char *, const char *);
+static int valid_xline(struct Client *, const char *, const char *, int);
 static void apply_xline(struct Client *client_p, const char *name, 
 			const char *reason, int temp_time);
 static void write_xline(struct Client *source_p, struct ConfItem *aconf);
@@ -161,7 +161,7 @@ mo_xline(struct Client *client_p, struct Client *source_p, int parc, const char
 		return 0;
 	}
 
-	if(!valid_xline(source_p, name, reason))
+	if(!valid_xline(source_p, name, reason, temp_time))
 		return 0;
 
 	apply_xline(source_p, name, reason, temp_time);
@@ -214,7 +214,7 @@ handle_remote_xline(struct Client *source_p, int temp_time,
 				(temp_time > 0) ? SHARED_TXLINE : SHARED_PXLINE))
 		return;
 
-	if(!valid_xline(source_p, name, reason))
+	if(!valid_xline(source_p, name, reason, temp_time))
 		return;
 
 	/* already xlined */
@@ -229,13 +229,13 @@ handle_remote_xline(struct Client *source_p, int temp_time,
 
 /* valid_xline()
  *
- * inputs	- client xlining, gecos, reason and whether to warn
+ * inputs	- client xlining, gecos, reason and temp time
  * outputs	-
  * side effects - checks the xline for validity, erroring if needed
  */
 static int
 valid_xline(struct Client *source_p, const char *gecos,
-	    const char *reason)
+	    const char *reason, int temp_time)
 {
 	if(EmptyString(reason))
 	{
@@ -245,6 +245,13 @@ valid_xline(struct Client *source_p, const char *gecos,
 		return 0;
 	}
 
+	if(temp_time == 0 && strstr(gecos, "\",") != NULL)
+	{
+		sendto_one_notice(source_p,
+				  ":Invalid character sequence '\",' in xline, please replace with '\"\\,'");
+		return 0;
+	}
+
 	if(strchr(reason, ':') != NULL)
 	{
 		sendto_one_notice(source_p,