Merge pull request #3022 from orestisf1993/i3bar-leaks

Fix i3bar leaks

i3bar/include/outputs.h

@@ -33,6 +33,12 @@ void parse_outputs_json(char* json);
  */
 void init_outputs(void);
 
+/*
+ * free() all outputs data structures.
+ *
+ */
+void free_outputs(void);
+
 /*
  * Returns the output with the given name
  *

i3bar/src/child.c

@@ -106,7 +106,7 @@ __attribute__((format(printf, 1, 2))) static void set_statusline_error(const cha
     va_list args;
     va_start(args, format);
     if (vasprintf(&message, format, args) == -1) {
-        return;
+        goto finish;
     }
 
     struct status_block *err_block = scalloc(1, sizeof(struct status_block));
@@ -124,6 +124,7 @@ __attribute__((format(printf, 1, 2))) static void set_statusline_error(const cha
     TAILQ_INSERT_HEAD(&statusline_head, err_block, blocks);
     TAILQ_INSERT_TAIL(&statusline_head, message_block, blocks);
 
+finish:
     FREE(message);
     va_end(args);
 }

i3bar/src/config.c

@@ -192,6 +192,7 @@ static int config_string_cb(void *params_, const unsigned char *val, size_t _len
 
     if (!strcmp(cur_key, "font")) {
         DLOG("font = %.*s\n", len, val);
+        FREE(config.fontname);
         sasprintf(&config.fontname, "%.*s", len, val);
         return 1;
     }

i3bar/src/ipc.c

@@ -64,17 +64,14 @@ void got_subscribe_reply(char *reply) {
  */
 void got_output_reply(char *reply) {
     DLOG("Clearing old output configuration...\n");
-    i3_output *o_walk;
-    SLIST_FOREACH(o_walk, outputs, slist) {
-        destroy_window(o_walk);
-    }
-    FREE_SLIST(outputs, i3_output);
+    free_outputs();
 
     DLOG("Parsing outputs JSON...\n");
     parse_outputs_json(reply);
     DLOG("Reconfiguring windows...\n");
     reconfig_windows(false);
 
+    i3_output *o_walk;
     SLIST_FOREACH(o_walk, outputs, slist) {
         kick_tray_clients(o_walk);
     }

i3bar/src/main.c

@@ -182,7 +182,5 @@ int main(int argc, char **argv) {
     clean_xcb();
     ev_default_destroy();
 
-    free_workspaces();
-
     return 0;
 }

i3bar/src/outputs.c

@@ -173,6 +173,12 @@ static int outputs_start_map_cb(void *params_) {
     return 1;
 }
 
+static void clear_output(i3_output *output) {
+    FREE(output->name);
+    FREE(output->workspaces);
+    FREE(output->trayclients);
+}
+
 /*
  * We hit the end of a map (rect or a new output)
  *
@@ -199,9 +205,7 @@ static int outputs_end_map_cb(void *params_) {
         if (!handle_output) {
             DLOG("Ignoring output \"%s\", not configured to handle it.\n",
                  params->outputs_walk->name);
-            FREE(params->outputs_walk->name);
-            FREE(params->outputs_walk->workspaces);
-            FREE(params->outputs_walk->trayclients);
+            clear_output(params->outputs_walk);
             FREE(params->outputs_walk);
             FREE(params->cur_key);
             return 1;
@@ -217,6 +221,9 @@ static int outputs_end_map_cb(void *params_) {
         target->primary = params->outputs_walk->primary;
         target->ws = params->outputs_walk->ws;
         target->rect = params->outputs_walk->rect;
+
+        clear_output(params->outputs_walk);
+        FREE(params->outputs_walk);
     }
     return 1;
 }
@@ -260,7 +267,6 @@ void init_outputs(void) {
  */
 void parse_outputs_json(char *json) {
     struct outputs_json_params params;
-
     params.outputs_walk = NULL;
     params.cur_key = NULL;
     params.json = json;
@@ -286,6 +292,27 @@ void parse_outputs_json(char *json) {
     yajl_free(handle);
 }
 
+/*
+ * free() all outputs data structures.
+ *
+ */
+void free_outputs(void) {
+    free_workspaces();
+
+    i3_output *outputs_walk;
+    if (outputs == NULL) {
+        return;
+    }
+    SLIST_FOREACH(outputs_walk, outputs, slist) {
+        destroy_window(outputs_walk);
+        if (outputs_walk->trayclients != NULL && !TAILQ_EMPTY(outputs_walk->trayclients)) {
+            FREE_TAILQ(outputs_walk->trayclients, trayclient);
+        }
+        clear_output(outputs_walk);
+    }
+    FREE_SLIST(outputs, i3_output);
+}
+
 /*
  * Returns the output with the given name
  *

i3bar/src/xcb.c

@@ -1499,16 +1499,7 @@ void init_tray_colors(void) {
  *
  */
 void clean_xcb(void) {
-    i3_output *o_walk;
-    free_workspaces();
-    SLIST_FOREACH(o_walk, outputs, slist) {
-        destroy_window(o_walk);
-        FREE(o_walk->trayclients);
-        FREE(o_walk->workspaces);
-        FREE(o_walk->name);
-    }
-    FREE_SLIST(outputs, i3_output);
-    FREE(outputs);
+    free_outputs();
 
     free_font();