Initial commit of Ccnet server.

net/common/ccnet-config.c

@@ -0,0 +1,114 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+
+#include "common.h"
+
+#include "ccnet-config.h"
+
+static gboolean
+get_value (sqlite3_stmt *stmt, void *data)
+{
+    char **p_value = data;
+
+    *p_value = g_strdup((char *) sqlite3_column_text (stmt, 0));
+    /* Only one result. */
+    return FALSE;
+}
+
+static char *
+config_get_string (sqlite3 *config_db, const char *key)
+{
+    char sql[256];
+    char *value = NULL;
+
+    snprintf (sql, sizeof(sql), 
+              "SELECT value FROM Config WHERE key='%s';",
+              key);
+    if (sqlite_foreach_selected_row (config_db, sql,
+                                     get_value, &value) < 0)
+        return NULL;
+
+    return value;
+}
+
+char *
+ccnet_session_config_get_string (CcnetSession *session,
+                                 const char *key)
+{
+    return (config_get_string (session->config_db, key));
+}
+
+int
+ccnet_session_config_get_int (CcnetSession *session,
+                              const char *key,
+                              gboolean *exists)
+{
+    char *value;
+    int ret;
+
+    value = config_get_string (session->config_db, key);
+    if (!value) {
+        *exists = FALSE;
+        return -1;
+    }
+
+    *exists = TRUE;
+    ret = atoi (value);
+    g_free (value);
+    return ret;
+}
+
+int
+ccnet_session_config_set_string (CcnetSession *session,
+                                 const char *key,
+                                 const char *value)
+{
+    char sql[256];
+
+    snprintf (sql, sizeof(sql),
+              "REPLACE INTO Config VALUES ('%s', '%s');",
+              key, value);
+    if (sqlite_query_exec (session->config_db, sql) < 0)
+        return -1;
+
+    return 0;
+}
+
+int
+ccnet_session_config_set_int (CcnetSession *session,
+                              const char *key,
+                              int value)
+{
+    char sql[256];
+
+    snprintf (sql, sizeof(sql),
+              "REPLACE INTO Config VALUES ('%s', %d);",
+              key, value);
+    if (sqlite_query_exec (session->config_db, sql) < 0)
+        return -1;
+
+    return 0;
+}
+
+sqlite3 *
+ccnet_session_config_open_db (const char *ccnet_dir)
+{
+    sqlite3 *db;
+    char *db_path;
+
+    db_path = g_build_filename (ccnet_dir, "config.db", NULL);
+    if (sqlite_open_db (db_path, &db) < 0)
+        return NULL;
+    g_free (db_path);
+
+    /*
+     * Values are stored in text. You should convert it
+     * back to integer if needed when you read it from
+     * db.
+     */
+    char *sql = "CREATE TABLE IF NOT EXISTS Config ("
+        "key TEXT PRIMARY KEY, "
+        "value TEXT);";
+    sqlite_query_exec (db, sql);
+
+    return db;
+}