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Prevent zathura from SIGSEGV if link is a NULL pointer

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This commit is contained in:
Moritz Lipp 2012-04-22 10:33:30 +02:00
parent adc9f41264
commit ef99076a48
1 changed files with 20 additions and 16 deletions
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36
page-widget.c
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@ -195,8 +195,10 @@ zathura_page_widget_set_property(GObject* object, guint prop_id, const GValue* v
if (priv->links_got == true && priv->links != NULL) {
GIRARA_LIST_FOREACH(priv->links, zathura_link_t*, iter, link)
zathura_rectangle_t rectangle = recalc_rectangle(priv->page, link->position);
redraw_rect(pageview, &rectangle);
if (link != NULL) {
zathura_rectangle_t rectangle = recalc_rectangle(priv->page, link->position);
redraw_rect(pageview, &rectangle);
}
GIRARA_LIST_FOREACH_END(priv->links, zathura_link_t*, iter, link);
}
break;
@ -340,22 +342,24 @@ zathura_page_widget_draw(GtkWidget* widget, cairo_t* cairo)
if (priv->draw_links == true && priv->number_of_links != 0) {
unsigned int link_counter = 0;
GIRARA_LIST_FOREACH(priv->links, zathura_link_t*, iter, link)
zathura_rectangle_t rectangle = recalc_rectangle(priv->page, link->position);
if (link != NULL) {
zathura_rectangle_t rectangle = recalc_rectangle(priv->page, link->position);
/* draw position */
GdkColor color = priv->zathura->ui.colors.highlight_color;
cairo_set_source_rgba(cairo, color.red, color.green, color.blue, transparency);
cairo_rectangle(cairo, rectangle.x1, rectangle.y1,
(rectangle.x2 - rectangle.x1), (rectangle.y2 - rectangle.y1));
cairo_fill(cairo);
/* draw position */
GdkColor color = priv->zathura->ui.colors.highlight_color;
cairo_set_source_rgba(cairo, color.red, color.green, color.blue, transparency);
cairo_rectangle(cairo, rectangle.x1, rectangle.y1,
(rectangle.x2 - rectangle.x1), (rectangle.y2 - rectangle.y1));
cairo_fill(cairo);
/* draw text */
cairo_set_source_rgba(cairo, 0, 0, 0, 1);
cairo_set_font_size(cairo, 10);
cairo_move_to(cairo, rectangle.x1 + 1, rectangle.y2 - 1);
char* link_number = g_strdup_printf("%i", priv->link_offset + ++link_counter);
cairo_show_text(cairo, link_number);
g_free(link_number);
/* draw text */
cairo_set_source_rgba(cairo, 0, 0, 0, 1);
cairo_set_font_size(cairo, 10);
cairo_move_to(cairo, rectangle.x1 + 1, rectangle.y2 - 1);
char* link_number = g_strdup_printf("%i", priv->link_offset + ++link_counter);
cairo_show_text(cairo, link_number);
g_free(link_number);
}
GIRARA_LIST_FOREACH_END(priv->links, zathura_link_t*, iter, link);
}