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mask_select guard against null pointers

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Change-Id: I83d246c13d22c1e76a55cbfdd20dcc955eb556ec
This commit is contained in:
William Wilgus 2021-07-21 18:30:48 -04:00 committed by William Wilgus
parent 36e48a8bb2
commit 1fd190d02d
1 changed files with 35 additions and 27 deletions
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18
apps/gui/mask_select.c
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@ -79,11 +79,14 @@ static int calculate_mask_r(struct category *root, int mask)
while (i < root->children_count)
{
struct child *this = &root->children[i];
if (this)
{
if (this->state == SELECTED)
mask |= this->key_value;
else if (this->state == EXPANDED)
mask = calculate_mask_r(this->category, mask);
}
i++;
}
return mask;
@ -97,7 +100,7 @@ static int count_items(struct category *start)
for (i=0; i<start->children_count; i++)
{
struct child *foo = &start->children[i];
if (foo->state == EXPANDED)
if (foo && foo->state == EXPANDED)
count += count_items(foo->category);
count++;
}
@ -120,7 +123,7 @@ static struct child* find_index(struct category *start,
return foo;
}
i++;
if (foo->state == EXPANDED)
if (foo && foo->state == EXPANDED)
{
struct child *bar = find_index(foo->category, index - i, parent);
if (bar)
@ -141,7 +144,7 @@ static int item_action_callback(int action, struct gui_synclist *list)
struct category *parent;
struct child *this = find_index(root, list->selected_item, &parent);
if (action == ACTION_STD_OK)
if (action == ACTION_STD_OK && this)
{
switch (this->state)
{
@ -194,6 +197,8 @@ static const char * item_get_name(int selected_item, void * data,
for(int i = 0; i <= parent->depth; i++)
strcat(buffer, "\t\0");
if (this)
{
/* state of selection needs icons so if icons are disabled use text*/
if (!global_settings.show_icons)
{
@ -203,7 +208,7 @@ static const char * item_get_name(int selected_item, void * data,
strcat(buffer," \0");
}
strlcat(buffer, P2STR((const unsigned char *)this->name), buffer_len);
}
return buffer;
}
@ -212,7 +217,7 @@ static int item_get_talk(int selected_item, void *data)
struct category *root = (struct category*)data;
struct category *parent;
struct child *this = find_index(root, selected_item , &parent);
if (global_settings.talk_menu)
if (global_settings.talk_menu && this)
{
long id = P2ID((const unsigned char *)(this->name));
if(id>=0)
@ -234,6 +239,8 @@ static enum themable_icons item_get_icon(int selected_item, void * data)
struct category *parent;
struct child *this = find_index(root, selected_item, &parent);
if (this)
{
switch (this->state)
{
case SELECTED:
@ -245,6 +252,7 @@ static enum themable_icons item_get_icon(int selected_item, void * data)
default:
return Icon_NOICON;
}
}
return Icon_NOICON;
}