Dispatch queries to Tracker and get results

[netatalk.git] / etc / afpd / spotlight_module.c

diff --git a/etc/afpd/spotlight_module.c b/etc/afpd/spotlight_module.c
index 13aa8301d83ce51e36f3db58b9fb87e06e630651..d6ccb0740eba3887b9cc457763f380ef67ddf6df 100644 (file)
--- a/etc/afpd/spotlight_module.c
+++ b/etc/afpd/spotlight_module.c
@@ -16,28 +16,146 @@
 #include "config.h"
 #endif /* HAVE_CONFIG_H */
 
+#include <string.h>
+
+#include <tracker-sparql.h>
+
 #include <atalk/util.h>
 #include <atalk/errchk.h>
 #include <atalk/logger.h>
 
 #include "spotlight.h"
 
-int sl_mod_init(void *p)
+static TrackerSparqlConnection *connection;
+
+static int sl_mod_init(void *p)
 {
     EC_INIT;
-
+    GError *error = NULL;
     const char *msg = p;
 
     LOG(log_note, logtype_sl, "sl_mod_init: %s", msg);
+    setenv("DBUS_SESSION_BUS_ADDRESS", "unix:path=/tmp/spotlight.ipc", 1);
+
+    g_type_init();
+    connection = tracker_sparql_connection_get(NULL, &error);
+    if (!connection) {
+        LOG(log_error, logtype_sl, "Couldn't obtain a direct connection to the Tracker store: %s",
+            error ? error->message : "unknown error");
+        g_clear_error(&error);
+        EC_FAIL;
+    }
+
+EC_CLEANUP:
+    EC_EXIT;
+}
+
+/*!
+ * Return talloced query from query string
+ * *=="query*"
+ */
+static const gchar *map_spotlight_to_sparql_query(slq_t *slq)
+{
+    EC_INIT;
+    const gchar *sparql_query;
+    const char *sparql_query_format = "SELECT nie:url(?f) WHERE { ?f nie:url ?name FILTER regex(?name, \"%s\")}";
+    const char *slquery = slq->slq_qstring;
+    char *word, *p;
+
+    LOG(log_debug, logtype_sl, "query_word_from_sl_query: \"%s\"", slquery);
+
+    EC_NULL_LOG( word = strstr(slquery, "*==") );
+    word += 4; /* skip *== and the left enclosing quote */
+    EC_NULL( word = talloc_strdup(slq, word) );
+    /* Search asterisk */
+    EC_NULL_LOG( p = strchr(word, '*') );
+    *p = 0;
+
+    sparql_query = talloc_asprintf(slq, sparql_query_format, word);
+
+    LOG(log_debug, logtype_sl, "query_word_from_sl_query: \"%s\"", sparql_query);
+
+EC_CLEANUP:
+    if (ret != 0)
+        sparql_query = NULL;
+    return sparql_query;
+}
+
+static void tracker_cb(GObject *source_object, GAsyncResult *res, gpointer user_data)
+{
+    slq_t *slq = user_data;
+    TrackerSparqlCursor *cursor;
+    GError *error = NULL;
+
+    LOG(log_debug, logtype_sl, "tracker_cb");
+
+    cursor = tracker_sparql_connection_query_finish(connection, res, &error);
+
+    if (error) {
+        LOG(log_error, logtype_sl, "sl_mod_fetch_result: Couldn't query the Tracker Store: '%s'",
+            error ? error->message : "unknown error");
+        g_clear_error(&error);
+        return;
+    }
+
+    slq->slq_tracker_cursor = cursor;
+}
+
+static int sl_mod_start_search(void *p)
+{
+    EC_INIT;
+    slq_t *slq = p; 
+    const gchar *sparql_query;
+    GError *error = NULL;
+
+    LOG(log_debug, logtype_sl, "sl_mod_start_search: Spotlight query string: \"%s\"", slq->slq_qstring);
+
+    EC_NULL_LOG( sparql_query = map_spotlight_to_sparql_query(slq) );
+    LOG(log_debug, logtype_sl, "sl_mod_start_search: SPARQL query: \"%s\"", sparql_query);
+
+#if 0
+    /* Start the async query */
+    tracker_sparql_connection_query_async(connection, sparql_query, NULL, tracker_cb, slq);
+#endif
+
+    slq->slq_tracker_cursor = tracker_sparql_connection_query(connection, sparql_query, NULL, &error);
+    if (error) {
+        LOG(log_error, logtype_sl, "Couldn't query the Tracker Store: '%s'",
+            error ? error->message : "unknown error");
+        g_clear_error(&error);
+        EC_FAIL;
+    }
+
+EC_CLEANUP:
+    EC_EXIT;
+}
+
+static int sl_mod_fetch_result(void *p)
+{
+    EC_INIT;
+    slq_t *slq = p;
+    GError *error = NULL;
+
+    if (slq->slq_tracker_cursor) {
+        int i = 0;
+        while (tracker_sparql_cursor_next(slq->slq_tracker_cursor, NULL, &error)) {
+            LOG(log_debug, logtype_sl, "Result [%d]: %s",
+                i++, tracker_sparql_cursor_get_string(slq->slq_tracker_cursor, 0, NULL));
+        }
+    } else {
+        LOG(log_debug, logtype_sl, "sl_mod_fetch_result: no results found");
+    }
 
 EC_CLEANUP:
+    if (slq->slq_tracker_cursor)
+        g_object_unref(slq->slq_tracker_cursor);
     EC_EXIT;
 }
 
 struct sl_module_export sl_mod = {
     SL_MODULE_VERSION,
     sl_mod_init,
-    NULL,
-    NULL,
+    sl_mod_start_search,
+    sl_mod_fetch_result,
     NULL
 };