summaryrefslogtreecommitdiff
path: root/include/asterisk/bridging_roles.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asterisk/bridging_roles.h')
-rw-r--r--include/asterisk/bridging_roles.h135
1 files changed, 135 insertions, 0 deletions
diff --git a/include/asterisk/bridging_roles.h b/include/asterisk/bridging_roles.h
new file mode 100644
index 000000000..3acb67fae
--- /dev/null
+++ b/include/asterisk/bridging_roles.h
@@ -0,0 +1,135 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2013, Digium, Inc.
+ *
+ * Jonathan Rose <jrose@digium.com>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*! \file
+ * \brief Channel Bridging Roles API
+ * \author Jonathan Rose <jrose@digium.com>
+ */
+
+#ifndef _ASTERISK_BRIDGING_ROLES_H
+#define _ASTERISK_BRIDGING_ROLES_H
+
+#if defined(__cplusplus) || defined(c_plusplus)
+extern "C" {
+#endif
+
+#include "asterisk/linkedlists.h"
+
+#define AST_ROLE_LEN 32
+
+/*!
+ * \brief Adds a bridge role to a channel
+ *
+ * \param chan Acquirer of the requested role
+ * \param role_name Name of the role being attached
+ *
+ * \retval 0 on success
+ * \retval -1 on failure
+ */
+int ast_channel_add_bridge_role(struct ast_channel *chan, const char *role_name);
+
+/*!
+ * \brief Removes a bridge role from a channel
+ *
+ * \param chan Channel the role is being removed from
+ * \param role_name Name of the role being removed
+ */
+void ast_channel_remove_bridge_role(struct ast_channel *chan, const char *role_name);
+
+/*!
+ * \brief Set a role option on a channel
+ * \param channel Channel receiving the role option
+ * \param role_name Role the role option is applied to
+ * \param option Name of the option
+ * \param value Value of the option
+ *
+ * \param 0 on success
+ * \retval -1 on failure
+ */
+int ast_channel_set_bridge_role_option(struct ast_channel *channel, const char *role_name, const char *option, const char *value);
+
+/*!
+ * \brief Check to see if a bridge channel inherited a specific role from its channel
+ *
+ * \param bridge_channel The bridge channel being checked
+ * \param role_name Name of the role being checked
+ *
+ * \retval 0 The bridge channel does not have the requested role
+ * \retval 1 The bridge channel does have the requested role
+ *
+ * \note Before a bridge_channel can effectively check roles against a bridge, ast_bridge_roles_bridge_channel_establish_roles
+ * should be called on the bridge_channel so that roles and their respective role options can be copied from the channel
+ * datastore into the bridge_channel roles list. Otherwise this function will just return 0 because the list will be NULL.
+ */
+int ast_bridge_channel_has_role(struct ast_bridge_channel *bridge_channel, const char *role_name);
+
+/*!
+ * \brief Retrieve the value of a requested role option from a bridge channel
+ *
+ * \param bridge_channel The bridge channel we are retrieving the option from
+ * \param role_name Name of the role the option will be retrieved from
+ * \param option Name of the option we are retrieving the value of
+ *
+ * \retval NULL If either the role does not exist on the bridge_channel or the role does exist but the option has not been set
+ * \retval The value of the option
+ *
+ * \note See ast_bridge_roles_channel_set_role_option note about the need to call ast_bridge_roles_bridge_channel_establish_roles.
+ *
+ * \note The returned character pointer is only valid as long as the bridge_channel is guaranteed to be alive and hasn't had
+ * ast_bridge_roles_bridge_channel_clear_roles called against it (as this will free all roles and role options in the bridge
+ * channel). If you need this value after one of these destruction events occurs, you must make a local copy while it is
+ * still valid.
+ */
+const char *ast_bridge_channel_get_role_option(struct ast_bridge_channel *bridge_channel, const char *role_name, const char *option);
+
+/*!
+ * \brief Clone the roles from a bridge_channel's attached ast_channel onto the bridge_channel's role list
+ *
+ * \param bridge_channel The bridge channel that we are preparing
+ *
+ * \retval 0 on success
+ * \retval -1 on failure
+ *
+ * \details
+ * This function should always be called when the bridge_channel binds to an ast_channel at some point before the bridge_channel
+ * joins or is imparted onto a bridge. Failure to do so will result in an empty role list. While the list remains established,
+ * changes to roles on the ast_channel will not propogate to the bridge channel and roles can not be re-established on the bridge
+ * channel without first clearing the roles with ast_bridge_roles_bridge_channel_clear_roles.
+ */
+int ast_bridge_channel_establish_roles(struct ast_bridge_channel *bridge_channel);
+
+/*!
+ * \brief Clear all roles from a bridge_channel's role list
+ *
+ * \param bridge_channel the bridge channel that we are scrubbing
+ *
+ * \details
+ * If roles are already established on a bridge channel, ast_bridge_roles_bridge_channel_establish_roles will fail unconditionally
+ * without changing any roles. In order to update a bridge channel's roles, they must first be cleared from the bridge channel using
+ * this function.
+ *
+ * \note
+ * ast_bridge_roles_bridge_channel_clear_roles also serves as the destructor for the role list of a bridge channel.
+ */
+void ast_bridge_channel_clear_roles(struct ast_bridge_channel *bridge_channel);
+
+#if defined(__cplusplus) || defined(c_plusplus)
+}
+#endif
+
+#endif /* _ASTERISK_BRIDGING_ROLES_H */