not sure why it crashes

Makefile

@@ -1,6 +1,6 @@
 VERSION=1.2.0
 
-CFLAGS += -O2 -Wall -Wextra -Wshadow -rdynamic -D_GNU_SOURCE\
+CFLAGS += -g -O2 -Wall -Wextra -Wshadow -rdynamic -D_GNU_SOURCE\
 	-D_FILE_OFFSET_BITS=64 -DVERSION=\"$(VERSION)\"\
 	`pkg-config --cflags-only-I gumbo libcurl fuse uuid expat`
 LIBS = -pthread -lgumbo -lcurl -lfuse -lcrypto -luuid -lexpat

src/link.c

@@ -609,7 +609,7 @@ LinkTable *path_to_Link_LinkTable_new(const char *path)
             if (!CONFIG.sonic_id3) {
                 next_table = sonic_LinkTable_new_index_mode(link->sonic_id);
             } else {
-                next_table = sonic_LinkTable_new_index_mode(link->sonic_id_str);
+                next_table = sonic_LinkTable_new_id3_mode(link->sonic_id_str);
             }
         }
     }
@@ -629,6 +629,7 @@ static Link *path_to_Link_recursive(char *path, LinkTable *linktbl)
         *slash = '\0';
     }
 
+    puts(path);
     slash = strchr(path, '/');
     if ( slash == NULL ) {
         /* We cannot find another '/', we have reached the last level */

src/sonic.c

@@ -244,24 +244,38 @@ static void XMLCALL XML_parser_id3_mode(void *data, const char *elem,
 /**
  * \brief parse a XML string in order to fill in the LinkTable
  */
-static void sonic_XML_to_LinkTable(DataStruct ds, LinkTable *linktbl)
+static LinkTable *sonic_url_to_LinkTable(const char *url,
+                                         XML_StartElementHandler handler)
 {
+    LinkTable *linktbl = LinkTable_alloc(url);
+
+    /* start downloading the base URL */
+    DataStruct xml = Link_to_DataStruct(linktbl->links[0]);
+    if (xml.size == 0) {
+        LinkTable_free(linktbl);
+        return NULL;
+    }
+
     XML_Parser parser = XML_ParserCreate(NULL);
     XML_SetUserData(parser, linktbl);
 
-    if (!CONFIG.sonic_id3) {
-        XML_SetStartElementHandler(parser, XML_parser_index_mode);
-    } else {
-        XML_SetStartElementHandler(parser, XML_parser_id3_mode);
-    }
+    XML_SetStartElementHandler(parser, handler);
 
-    if (XML_Parse(parser, ds.data, ds.size, 1) == XML_STATUS_ERROR) {
+    if (XML_Parse(parser, xml.data, xml.size, 1) == XML_STATUS_ERROR) {
         fprintf(stderr,
                 "sonic_XML_to_LinkTable(): Parse error at line %lu: %s\n",
                 XML_GetCurrentLineNumber(parser),
                 XML_ErrorString(XML_GetErrorCode(parser)));
     }
+
     XML_ParserFree(parser);
+
+    free(xml.data);
+
+    LinkTable_print(linktbl);
+
+    return linktbl;
+
 }
 
 LinkTable *sonic_LinkTable_new_index_mode(const int id)
@@ -272,29 +286,47 @@ LinkTable *sonic_LinkTable_new_index_mode(const int id)
     } else {
         url = sonic_gen_url_first_part("getIndexes");
     }
-
-    printf("%s\n", url);
-
-    LinkTable *linktbl = LinkTable_alloc(url);
-
-    /* start downloading the base URL */
-    DataStruct xml = Link_to_DataStruct(linktbl->links[0]);
-    if (xml.size == 0) {
-        LinkTable_free(linktbl);
-        return NULL;
-    }
-
-    sonic_XML_to_LinkTable(xml, linktbl);
-
-    LinkTable_print(linktbl);
-
-    free(xml.data);
+    LinkTable *linktbl = sonic_url_to_LinkTable(url, XML_parser_index_mode);
     free(url);
     return linktbl;
 }
 
-LinkTable *sonic_LinkTable_new_id3_mode(const char *sonic_id_str)
+LinkTable *sonic_LinkTable_new_id3_root()
 {
+    char *url = sonic_gen_url_first_part("getArtists");
+    LinkTable *linktbl = sonic_url_to_LinkTable(url, XML_parser_index_mode);
+    free(url);
+    return linktbl;
+}
+
+LinkTable *sonic_LinkTable_new_id3_mode(char *sonic_id_str)
+{
+    /* Count the number of '/' */
+    int n = 0;
+    for (char *c = sonic_id_str; *c; c++) {
+        if (*c == '/') {
+            n++;
+        }
+    }
+
+    char *url;
+    switch (n) {
+        /* Root level */
+        case 1:
+            break;
+        /* Index level */
+        case 2:
+            break;
+        /* Artist level */
+        case 3:
+            break;
+        /* Album level*/
+        case 4:
+            break;
+        /* Invalid */
+        default:
+            break;
+    }
     return NULL;
 }
 

src/sonic.h

@@ -14,13 +14,19 @@ void sonic_config_init(const char *server, const char *username,
                        const char *password);
 
 /**
- * \brief Create a new Sonic LinkTable in index mode)
+ * \brief Create a new Sonic LinkTable in index mode
  */
 LinkTable *sonic_LinkTable_new_index_mode(const int id);
 
 /**
- * \brief Create a new Sonic LinkTable in ID3 mode)
+ * \brief Create a new Sonic LinkTable in ID3 mode
+ * \details In this mode, the filesystem effectively has 4 levels of
+ * directories, which are:
+ *  1. Root
+ *  2. Index
+ *  3. Artists
+ *  4. Album
  */
-LinkTable *sonic_LinkTable_new_id3_mode(const char *sonic_id_str);
+LinkTable *sonic_LinkTable_new_id3_mode(char *sonic_id_str);
 
 #endif