Feature: Added support for a mountpoint identifier

src/Makefile.am

@@ -41,6 +41,7 @@ noinst_HEADERS = \
     xml2json.h \
     listensocket.h \
     fastevent.h \
+    navigation.h \
     event.h \
     event_log.h \
     event_exec.h \
@@ -92,6 +93,7 @@ icecast_SOURCES = \
     xml2json.c \
     listensocket.c \
     fastevent.c \
+    navigation.c \
     format.c \
     format_ogg.c \
     format_mp3.c \

src/icecasttypes.h

@@ -126,6 +126,10 @@ typedef struct listensocket_tag listensocket_t;
 
 typedef struct digest_tag digest_t;
 
+/* ---[ navigation.[ch] ]--- */
+
+typedef struct mount_identifier_tag mount_identifier_t;
+
 /* ---[ refobject.[ch] ]--- */
 
 typedef struct refobject_base_tag refobject_base_t;
@@ -142,6 +146,7 @@ typedef union __attribute__ ((__transparent_union__)) {
     listensocket_container_t *listensocket_container;
     listensocket_t *listensocket;
     digest_t *digest;
+    mount_identifier_t *mount_identifier;
 } refobject_t;
 #else
 typedef void * refobject_t;

src/main.c

@@ -80,6 +80,7 @@
 #include "listensocket.h"
 #include "fastevent.h"
 #include "prng.h"
+#include "navigation.h"
 
 #include <libxml/xmlmemory.h>
 
@@ -146,6 +147,7 @@ static void initialize_subsystems(void)
     log_initialize();
     thread_initialize();
     prng_initialize();
+    navigation_initialize();
     global_initialize();
 #ifndef FASTEVENT_ENABLED
     fastevent_initialize();
@@ -186,6 +188,7 @@ static void shutdown_subsystems(void)
     refobject_unref(fastevent_reg);
     fastevent_shutdown();
 #endif
+    navigation_shutdown();
     prng_shutdown();
     global_shutdown();
     thread_shutdown();

src/navigation.c

@@ -0,0 +1,80 @@
+/* Icecast
+ *
+ * This program is distributed under the GNU General Public License, version 2.
+ * A copy of this license is included with this source.
+ *
+ * Copyright 2020,      Philipp "ph3-der-loewe" Schafft <lion@lion.leolix.org>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <string.h>
+
+#include "common/avl/avl.h"
+
+#include "navigation.h"
+
+#include "logging.h"
+#define CATMODULE "navigation"
+
+struct mount_identifier_tag {
+    /* base object */
+    refobject_base_t __base;
+};
+
+REFOBJECT_DEFINE_TYPE(mount_identifier_t);
+
+static avl_tree *mount_identifier_list;
+
+static int mount_identifier_compare(void *compare_arg, void *a, void *b)
+{
+    const char *id_a, *id_b;
+
+    id_a = refobject_get_name(a);
+    id_b = refobject_get_name(b);
+
+    if (!id_a || !id_b || id_a == id_b) {
+        return 0;
+    } else {
+        return strcmp(id_a, id_b);
+    }
+}
+
+void navigation_initialize(void)
+{
+    mount_identifier_list = avl_tree_new(mount_identifier_compare, NULL);
+}
+
+void navigation_shutdown(void)
+{
+    avl_tree_free(mount_identifier_list, (avl_free_key_fun_type)refobject_unref);
+}
+
+
+mount_identifier_t * mount_identifier_new(const char *mount)
+{
+    mount_identifier_t *n;
+    void *result;
+
+    if (!mount)
+        return NULL;
+
+    n = refobject_new_ext(mount_identifier_t, NULL, mount, NULL);
+    if (!n)
+        return NULL;
+
+    avl_tree_wlock(mount_identifier_list);
+    if (avl_get_by_key(mount_identifier_list, n, &result) == 0) {
+        refobject_unref(n);
+        n = result;
+        refobject_ref(n);
+    } else {
+        refobject_ref(n);
+        avl_insert(mount_identifier_list, n); 
+    }
+    avl_tree_unlock(mount_identifier_list);
+
+    return n;
+}

src/navigation.h

@@ -0,0 +1,21 @@
+/* Icecast
+ *
+ * This program is distributed under the GNU General Public License, version 2.
+ * A copy of this license is included with this source.
+ *
+ * Copyright 2020,      Philipp "ph3-der-loewe" Schafft <lion@lion.leolix.org>
+ */
+
+#ifndef __NAVIGATION_H__
+#define __NAVIGATION_H__
+
+#include "refobject.h"
+
+REFOBJECT_FORWARD_TYPE(mount_identifier_t);
+
+void navigation_initialize(void);
+void navigation_shutdown(void);
+
+mount_identifier_t * mount_identifier_new(const char *mount);
+
+#endif