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-rw-r--r--Changelog-Trunk.txt4
-rw-r--r--src/map/instance.c51
-rw-r--r--src/map/instance.h2
3 files changed, 38 insertions, 19 deletions
diff --git a/Changelog-Trunk.txt b/Changelog-Trunk.txt
index 76195a89a..60939a692 100644
--- a/Changelog-Trunk.txt
+++ b/Changelog-Trunk.txt
@@ -1,6 +1,10 @@
Date Added
2011/07/02
+ * More instancing updates. [Ai4rei]
+ - Improved instance_id validity checking.
+ - Fixed instance name being copied with memcpy rather than safestrncpy (since r13901).
+ - Removed unused instance data field 'progress_timeoutval' (since r13901).
* Random updates to instance system. [Ai4rei]
- Introduced a constant for instance name length.
- Corrected comments related to instance packets 0x2cb (ZC_MEMORIALDUNGEON_SUBSCRIPTION_INFO) and 0x2ce (ZC_MEMORIALDUNGEON_NOTIFY).
diff --git a/src/map/instance.c b/src/map/instance.c
index fecbe41f7..d533a0188 100644
--- a/src/map/instance.c
+++ b/src/map/instance.c
@@ -28,6 +28,24 @@
int instance_start = 0; // To keep the last index + 1 of normal map inserted in the map[ARRAY]
struct s_instance instance[MAX_INSTANCE];
+
+/// Checks whether given instance id is valid or not.
+static bool instance_is_valid(int instance_id)
+{
+ if( instance_id < 1 || instance_id >= ARRAYLENGTH(instance) )
+ {// out of range
+ return false;
+ }
+
+ if( instance[instance_id].state == INSTANCE_FREE )
+ {// uninitialized/freed instance slot
+ return false;
+ }
+
+ return true;
+}
+
+
/*--------------------------------------
* name : instance name
* Return value could be
@@ -62,13 +80,13 @@ int instance_create(int party_id, const char *name)
instance[i].idle_timer = INVALID_TIMER;
instance[i].idle_timeout = instance[i].idle_timeoutval = 0;
instance[i].progress_timer = INVALID_TIMER;
- instance[i].progress_timeout = instance[i].progress_timeoutval = 0;
+ instance[i].progress_timeout = 0;
instance[i].users = 0;
instance[i].party_id = party_id;
instance[i].ivar = NULL;
instance[i].svar = NULL;
- memcpy( instance[i].name, name, sizeof(instance[i].name) );
+ safestrncpy( instance[i].name, name, sizeof(instance[i].name) );
memset( instance[i].map, 0x00, sizeof(instance[i].map) );
p->instance_id = i;
@@ -88,7 +106,7 @@ int instance_add_map(const char *name, int instance_id, bool usebasename)
if( m < 0 )
return -1; // source map not found
- if( instance[instance_id].state == INSTANCE_FREE )
+ if( !instance_is_valid(instance_id) )
{
ShowError("instance_add_map: trying to attach '%s' map to non-existing instance %d.\n", name, instance_id);
return -1;
@@ -158,6 +176,12 @@ int instance_add_map(const char *name, int instance_id, bool usebasename)
int instance_map2imap(int m, int instance_id)
{
int i;
+
+ if( !instance_is_valid(instance_id) )
+ {
+ return -1;
+ }
+
for( i = 0; i < instance[instance_id].num_map; i++ )
{
if( instance[instance_id].map[i] && map[instance[instance_id].map[i]].instance_src_map == m )
@@ -173,7 +197,6 @@ int instance_map2imap(int m, int instance_id)
*--------------------------------------*/
int instance_mapid2imapid(int m, int instance_id)
{
- int i, max;
if( map[m].flag.src4instance == 0 )
return m; // not instances found for this map
else if( map[m].instance_id )
@@ -182,16 +205,10 @@ int instance_mapid2imapid(int m, int instance_id)
return -1;
}
- if( instance_id <= 0 )
+ if( !instance_is_valid(instance_id) )
return -1;
- max = instance[instance_id].num_map;
-
- for( i = 0; i < max; i++ )
- if( map[instance[instance_id].map[i]].instance_src_map == m )
- return instance[instance_id].map[i];
-
- return -1;
+ return instance_map2imap(m, instance_id);
}
/*--------------------------------------
@@ -214,7 +231,7 @@ void instance_init(int instance_id)
{
int i;
- if( !instance_id )
+ if( !instance_is_valid(instance_id) )
return; // nothing to do
for( i = 0; i < instance[instance_id].num_map; i++ )
@@ -309,7 +326,7 @@ void instance_destroy(int instance_id)
struct party_data *p;
time_t now = time(NULL);
- if( !instance_id || instance[instance_id].state == INSTANCE_FREE )
+ if( !instance_is_valid(instance_id) )
return; // nothing to do
if( instance[instance_id].progress_timeout && instance[instance_id].progress_timeout <= now )
@@ -361,7 +378,7 @@ void instance_check_idle(int instance_id)
bool idle = true;
time_t now = time(NULL);
- if( !instance_id || instance[instance_id].idle_timeoutval == 0 )
+ if( !instance_is_valid(instance_id) || instance[instance_id].idle_timeoutval == 0 )
return;
if( instance[instance_id].users )
@@ -389,7 +406,7 @@ void instance_set_timeout(int instance_id, unsigned int progress_timeout, unsign
{
time_t now = time(0);
- if( !instance_id )
+ if( !instance_is_valid(instance_id) )
return;
if( instance[instance_id].progress_timer != INVALID_TIMER )
@@ -399,13 +416,11 @@ void instance_set_timeout(int instance_id, unsigned int progress_timeout, unsign
if( progress_timeout )
{
- instance[instance_id].progress_timeoutval = progress_timeout;
instance[instance_id].progress_timeout = now + progress_timeout;
instance[instance_id].progress_timer = add_timer( gettick() + progress_timeout * 1000, instance_destroy_timer, instance_id, 0);
}
else
{
- instance[instance_id].progress_timeoutval = 0;
instance[instance_id].progress_timeout = 0;
instance[instance_id].progress_timer = INVALID_TIMER;
}
diff --git a/src/map/instance.h b/src/map/instance.h
index a4735113a..e2b0354f9 100644
--- a/src/map/instance.h
+++ b/src/map/instance.h
@@ -24,7 +24,7 @@ struct s_instance {
struct linkdb_node *ivar, *svar; // Instance Variable for scripts
int progress_timer;
- time_t progress_timeout, progress_timeoutval;
+ time_t progress_timeout;
int idle_timer;
time_t idle_timeout, idle_timeoutval;