permission: convert to C++

src/Permission.cxx

@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2003-2013 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+#include "Permission.hxx"
+#include "mpd_error.h"
+
+extern "C" {
+#include "conf.h"
+}
+
+#include <glib.h>
+
+#include <stdbool.h>
+#include <string.h>
+
+#define PERMISSION_PASSWORD_CHAR	'@'
+#define PERMISSION_SEPERATOR		","
+
+#define PERMISSION_READ_STRING		"read"
+#define PERMISSION_ADD_STRING		"add"
+#define PERMISSION_CONTROL_STRING	"control"
+#define PERMISSION_ADMIN_STRING		"admin"
+
+static GHashTable *permission_passwords;
+
+static unsigned permission_default;
+
+static unsigned parsePermissions(const char *string)
+{
+	unsigned permission = 0;
+	gchar **tokens;
+
+	if (!string)
+		return 0;
+
+	tokens = g_strsplit(string, PERMISSION_SEPERATOR, 0);
+	for (unsigned i = 0; tokens[i] != NULL; ++i) {
+		char *temp = tokens[i];
+
+		if (strcmp(temp, PERMISSION_READ_STRING) == 0) {
+			permission |= PERMISSION_READ;
+		} else if (strcmp(temp, PERMISSION_ADD_STRING) == 0) {
+			permission |= PERMISSION_ADD;
+		} else if (strcmp(temp, PERMISSION_CONTROL_STRING) == 0) {
+			permission |= PERMISSION_CONTROL;
+		} else if (strcmp(temp, PERMISSION_ADMIN_STRING) == 0) {
+			permission |= PERMISSION_ADMIN;
+		} else {
+			MPD_ERROR("unknown permission \"%s\"", temp);
+		}
+	}
+
+	g_strfreev(tokens);
+
+	return permission;
+}
+
+void initPermissions(void)
+{
+	char *password;
+	unsigned permission;
+	const struct config_param *param;
+
+	permission_passwords = g_hash_table_new_full(g_str_hash, g_str_equal,
+						     g_free, NULL);
+
+	permission_default = PERMISSION_READ | PERMISSION_ADD |
+	    PERMISSION_CONTROL | PERMISSION_ADMIN;
+
+	param = config_get_next_param(CONF_PASSWORD, NULL);
+
+	if (param) {
+		permission_default = 0;
+
+		do {
+			const char *separator =
+				strchr(param->value, PERMISSION_PASSWORD_CHAR);
+
+			if (separator == NULL)
+				MPD_ERROR("\"%c\" not found in password string "
+					"\"%s\", line %i",
+					PERMISSION_PASSWORD_CHAR,
+					param->value, param->line);
+
+			password = g_strndup(param->value,
+					     separator - param->value);
+
+			permission = parsePermissions(separator + 1);
+
+			g_hash_table_replace(permission_passwords,
+					     password,
+					     GINT_TO_POINTER(permission));
+		} while ((param = config_get_next_param(CONF_PASSWORD, param)));
+	}
+
+	param = config_get_param(CONF_DEFAULT_PERMS);
+
+	if (param)
+		permission_default = parsePermissions(param->value);
+}
+
+int getPermissionFromPassword(char const* password, unsigned* permission)
+{
+	bool found;
+	gpointer key, value;
+
+	found = g_hash_table_lookup_extended(permission_passwords,
+					     password, &key, &value);
+	if (!found)
+		return -1;
+
+	*permission = GPOINTER_TO_INT(value);
+	return 0;
+}
+
+void finishPermissions(void)
+{
+	g_hash_table_destroy(permission_passwords);
+}
+
+unsigned getDefaultPermissions(void)
+{
+	return permission_default;
+}