From 3a952862872b395a9ad4f7c84e7c5b4b2f3e186e Mon Sep 17 00:00:00 2001
From: martin-s <martin-s@ffa7fe5e-494d-0410-b361-a75ebd5db220>
Date: Wed, 25 Feb 2009 13:58:21 +0000
Subject: [PATCH] Fix:osd_core:Prevent a crash

git-svn-id: https://navit.svn.sourceforge.net/svnroot/navit/trunk@2072 ffa7fe5e-494d-0410-b361-a75ebd5db220
---
 navit/navit/osd/core/osd_core.c | 10 ++++------
 navit/navit/track.c             |  8 ++++++++
 navit/navit/track.h             |  1 +
 3 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/navit/navit/osd/core/osd_core.c b/navit/navit/osd/core/osd_core.c
index bfaf7a6..7df3c48 100644
--- a/navit/navit/osd/core/osd_core.c
+++ b/navit/navit/osd/core/osd_core.c
@@ -890,7 +890,7 @@ osd_text_draw(struct osd_text *this, struct navit *navit, struct vehicle *v)
 	struct point p, p2[4];
 	char *str,*next,*start,*end,*key,*subkey,*index,*value;
 	int do_draw = 0;
-	struct attr attr, vehicle_attr, flags_attr, maxspeed_attr;
+	struct attr attr, vehicle_attr, maxspeed_attr;
 	struct navigation *nav = NULL;
 	struct tracking *tracking = NULL;
 	struct route *route = NULL;
@@ -964,11 +964,9 @@ osd_text_draw(struct osd_text *this, struct navit *navit, struct vehicle *v)
 					item=tracking_get_current_item(tracking);
 					if (item && !strcmp(key,"route_speed")) {
 						double routespeed = -1;
-						if (item_attr_get(item, attr_flags, &flags_attr) && (flags_attr.u.num & AF_SPEED_LIMIT)) {
-							if (item_attr_get(item, attr_maxspeed, &maxspeed_attr)) {
-								routespeed = maxspeed_attr.u.num;
-								value = format_speed(routespeed, "");
-							}
+						if ((tracking_get_current_flags(tracking) & AF_SPEED_LIMIT) && tracking_get_current_attr(tracking, attr_maxspeed, &maxspeed_attr)) {
+							routespeed = maxspeed_attr.u.num;
+							value = format_speed(routespeed, "");
 						} 
 
 						if ((routespeed == -1) && route && (speedlist=route_get_speedlist(route))) {
diff --git a/navit/navit/track.c b/navit/navit/track.c
index 071c98f..848494c 100644
--- a/navit/navit/track.c
+++ b/navit/navit/track.c
@@ -121,6 +121,14 @@ tracking_get_current_item(struct tracking *_this)
 	return &_this->curr_line->street->item;
 }
 
+int
+tracking_get_current_flags(struct tracking *_this)
+{
+	if (! _this->curr_line || ! _this->curr_line->street)
+		return NULL;
+	return &_this->curr_line->street->flags;
+}
+
 static void
 tracking_get_angles(struct tracking_line *tl)
 {
diff --git a/navit/navit/track.h b/navit/navit/track.h
index fe7ef90..1a26761 100644
--- a/navit/navit/track.h
+++ b/navit/navit/track.h
@@ -37,6 +37,7 @@ void tracking_set_mapset(struct tracking *this_, struct mapset *ms);
 void tracking_set_route(struct tracking *this_, struct route *rt);
 int tracking_get_current_attr(struct tracking *_this, enum attr_type type, struct attr *attr);
 struct item *tracking_get_current_item(struct tracking *_this);
+int tracking_get_current_flags(struct tracking *_this);
 void tracking_destroy(struct tracking *tr);
 struct map * tracking_get_map(struct tracking *this_);
 void tracking_init(void);
-- 
2.7.4