Source: ../../cli/cli_node.hh
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// -*- c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t -*-
// Copyright (c) 2001-2009 XORP, Inc.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License, Version 2, June
// 1991 as published by the Free Software Foundation. Redistribution
// and/or modification of this program under the terms of any other
// version of the GNU General Public License is not permitted.
//
// 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. For more details,
// see the GNU General Public License, Version 2, a copy of which can be
// found in the XORP LICENSE.gpl file.
//
// XORP Inc, 2953 Bunker Hill Lane, Suite 204, Santa Clara, CA 95054, USA;
// http://xorp.net
// $XORP: xorp/cli/cli_node.hh,v 1.36 2009/01/05 18:30:45 jtc Exp $
#ifndef __CLI_CLI_NODE_HH__
#define __CLI_CLI_NODE_HH__
//
// CLI node definition.
//
#include <list>
#include "libxorp/xorpfd.hh"
#include "libxorp/eventloop.hh"
#include "libproto/proto_node.hh"
#include "cli_command.hh"
//
// Constants definitions
//
//
// Structures/classes, typedefs and macros
//
class EventLoop;
class CliClient;
class CliPipe;
class IPvXNet;
/**
* @short The class for the CLI node.
*
* There should one node per CLI instance. There should be
* one CLI instance per router.
*/
class CliNode : public ProtoNode<Vif> {
public:
/**
* Constructor for a given address family, module ID, and event loop.
*
* @param init_family the address family (AF_INET or AF_INET6 for
* IPv4 and IPv6 respectively). Note that this argument may disappear
* in the future, and a single Cli node would provide access for
* both IPv4 and IPv6.
* @param init_module_id the module ID (@ref xorp_module_id). Should be
* equal to XORP_MODULE_CLI.
* @param init_eventloop the event loop to use.
*/
CliNode(int init_family, xorp_module_id init_module_id,
EventLoop& init_eventloop);
/**
* Destructor
*/
virtual ~CliNode();
/**
* Start the node operation.
*
* @return XORP_OK on success, otherwise XORP_ERROR.
*/
int start();
/**
* Stop the node operation.
*
* @return XORP_OK on success, otherwise XORP_ERROR.
*/
int stop();
/**
* Enable node operation.
*
* If an unit is not enabled, it cannot be start, or pending-start.
*/
void enable();
/**
* Disable node operation.
*
* If an unit is disabled, it cannot be start or pending-start.
* If the unit was runnning, it will be stop first.
*/
void disable();
/**
* Set the CLI access port.
*
* The access port is the TCP port the CLI node listens to for
* network access (e.g., telnet xorp_host <port_number>).
*
* @param v the access port number (in host order).
*/
void set_cli_port(unsigned short v) { _cli_port = htons(v); }
/**
* Add a subnet address to the list of subnet addresses enabled
* for CLI access.
*
* This method can be called more than once to add a number of
* subnet addresses.
*
* @param subnet_addr the subnet address to add.
*/
void add_enable_cli_access_from_subnet(const IPvXNet& subnet_addr);
/**
* Delete a subnet address from the list of subnet addresses enabled
* for CLI access.
*
* @param subnet_addr the subnet address to delete.
* @return XORP_OK on success, otherwise XORP_ERROR (e.g., if the subnet
* address was not added before).
*/
int delete_enable_cli_access_from_subnet(const IPvXNet& subnet_addr);
/**
* Add a subnet address to the list of subnet addresses disabled
* for CLI access.
*
* This method can be called more than once to add a number of
* subnet addresses.
*
* @param subnet_addr the subnet address to add.
*/
void add_disable_cli_access_from_subnet(const IPvXNet& subnet_addr);
/**
* Delete a subnet address from the list of subnet addresses disabled
* for CLI access.
*
* @param subnet_addr the subnet address to delete.
* @return XORP_OK on success, otherwise XORP_ERROR (e.g., if the subnet
* address was not added before).
*/
int delete_disable_cli_access_from_subnet(const IPvXNet& subnet_addr);
/**
* Get the @ref CliCommand entry for the CLI root command.
*
* @return a pointer to the @ref CliCommand entry for the CLI root command.
*/
CliCommand *cli_command_root() { return (&_cli_command_root); }
/**
* Output a log message to a @ref CliClient object.
*
* @param obj the @ref CliClient object to apply this method to.
* @param level the XLOG level.
* @param msg a C-style string with the message to output.
* @return on success, the number of characters printed,
* otherwise %XORP_ERROR.
*/
static int xlog_output(void *obj, xlog_level_t level, const char *msg);
/**
* Find a CLI client @ref CliClient for a given terminal name.
*
* @param term_name the CLI terminal name to search for.
* @return the CLI client @ref CliClient with name of @ref term_name
* on success, otherwise NULL.
*/
CliClient *find_cli_by_term_name(const string& term_name) const;
/**
* Find a CLI client @ref CliClient for a given session ID.
*
* @param session_id the CLI session ID to search for.
* @return the CLI client @ref CliClient with session ID of @ref session_id
* on success, otherwise NULL.
*/
CliClient *find_cli_by_session_id(uint32_t session_id) const;
/**
* Get the list of CLI clients (see @ref CliClient).
*
* @return a reference to the list of pointers to CLI clients
* (see @ref CliClient).
*/
list<CliClient *>& client_list() { return (_client_list); }
/**
* Add a CLI command to the CLI manager.
*
* @param processor_name the name of the module that will process
* that command.
* @param command_name the name of the command to add.
* @param command_help the help for the command to add.
* @param is_command_cd if true, this is a command that allows
* "change directory" inside the CLI command-tree.
* @param command_cd_prompt if @ref is_command_cd is true,
* the string that will replace the CLI prompt after we
* "cd" to that level of the CLI command-tree.
* @param is_command_processor if true, this is a processing command
* that would be performed by @processor_name.
* @param error_msg the error message (if error).
*
* @return XORP_OK on success, otherwise XORP_ERROR.
*/
int add_cli_command(
// Input values,
const string& processor_name,
const string& command_name,
const string& command_help,
const bool& is_command_cd,
const string& command_cd_prompt,
const bool& is_command_processor,
// Output values,
string& error_msg);
/**
* Delete a CLI command from the CLI manager.
*
* @param processor_name the name of the module that is processing
* that command.
* @param command_name the name of the command to delete.
* @param error_msg the error message (if error).
* @return XORP_OK on success, otherwise XORP_ERROR.
*/
int delete_cli_command(
// Input values,
const string& processor_name,
const string& command_name,
// Output values,
string& error_msg);
/**
* Process the response of a command processed by a remote node.
*
* @param processor_name the name of the module that has processed
* that command.
* @param cli_term_name the terminal name the command was entered from.
* @param cli_session_id the CLI session ID the command was entered from.
* @param command_output the command output to process.
*/
void recv_process_command_output(const string *processor_name,
const string *cli_term_name,
const uint32_t *cli_session_id,
const string *command_output);
//
// Protocol message and kernel signal send/recv: not used by the CLI.
//
/**
* UNUSED
*/
int proto_recv(const string& , // if_name,
const string& , // vif_name,
const IPvX& , // src_address,
const IPvX& , // dst_address,
uint8_t , // ip_protocol,
int32_t , // ip_ttl,
int32_t , // ip_tos,
bool , // ip_router_alert,
bool , // ip_internet_control,
const vector<uint8_t>& , // payload,
string& // error_msg
) { assert (false); return (XORP_ERROR); }
/**
* UNUSED
*/
int proto_send(const string& , // if_name,
const string& , // vif_name,
const IPvX& , // src_address,
const IPvX& , // dst_address,
uint8_t , // ip_protocol,
int32_t , // ip_ttl,
int32_t , // ip_tos,
bool , // ip_router_alert,
bool , // ip_internet_control,
const uint8_t* , // sndbuf,
size_t , // sndlen,
string& // error_msg
) { assert (false); return (XORP_ERROR); }
/**
* UNUSED
*/
int signal_message_recv(const string& , // src_module_instance_name,
int , // message_type,
uint32_t , // vif_index,
const IPvX& , // src,
const IPvX& , // dst,
const uint8_t * , // rcvbuf,
size_t // rcvlen
) { assert (false); return (XORP_ERROR); }
/**
* UNUSED
*/
int signal_message_send(const string& , // dst_module_instance_name,
int , // message_type,
uint32_t , // vif_index,
const IPvX& , // src,
const IPvX& , // dst,
const uint8_t * , // sndbuf,
size_t // sndlen
) { assert (false); return (XORP_ERROR); }
typedef XorpCallback6<void,
const string&, // target
const string&, // server_name
const string&, // cli_term_name
uint32_t, // cli_session_id
const vector<string>&, // command_global_name
const vector<string>& // argv
>::RefPtr SenderProcessCallback;
/**
* Set a callback to send a CLI command to a processing module.
*
* @param v the @ref SenderProcessCallback callback to set.
*/
void set_send_process_command_callback(const SenderProcessCallback& v) {
_send_process_command_callback = v;
}
/**
* Add a CLI client (@ref CliClient) to the CLI with enabled access
* from a file descriptor.
*
* @param input_fd the file descriptor for the CLI client to read
* data from.
* @param output_fd the file descriptor for the CLI client to write
* data to.
* @param is_network if true, this client is associated with a
* network connection.
* @param startup_cli_prompt the startup CLI prompt.
* @param error_msg the error message (if error).
* @return a pointer to the CLI client (@ref CliClient) with enabled
* CLI access on success, otherwise NULL.
*/
CliClient *add_client(XorpFd input_fd, XorpFd output_fd, bool is_network,
const string& startup_cli_prompt, string& error_msg);
/**
* Remove a CLI client (@ref CliClient) from the CLI.
*
* Note that the CLI client object itself is not deleted.
*
* @param cli_client the CLI client (@ref CliClient) to remove.
* @param error_msg the error message (if error).
* @return XORP_OK on success, otherwise XORP_ERROR.
*/
int remove_client(CliClient *cli_client, string& error_msg);
typedef XorpCallback1<void,
CliClient* // CLI client to delete
>::RefPtr CliClientDeleteCallback;
/**
* Set the callback method that is invoked whenever a CliClient is deleted
*
* @param v the @ref CliClientDeleteCallback callback to set.
*/
void set_cli_client_delete_callback(const CliClientDeleteCallback& v) {
_cli_client_delete_callback = v;
}
//
// Debug-related methods
//
/**
* Test if trace log is enabled.
*
* This method is used to test whether to output trace log debug messges.
*
* @return true if trace log is enabled, otherwise false.
*/
bool is_log_trace() const { return (_is_log_trace); }
/**
* Enable/disable trace log.
*
* This method is used to enable/disable trace log debug messages output.
*
* @param is_enabled if true, trace log is enabled, otherwise is disabled.
*/
void set_log_trace(bool is_enabled) { _is_log_trace = is_enabled; }
private:
friend class CliClient;
//
// Internal CLI commands
//
int add_internal_cli_commands(string& error_msg);
int cli_show_log(const string& server_name,
const string& cli_term_name,
uint32_t cli_session_id,
const vector<string>& command_global_name,
const vector<string>& argv);
int cli_show_log_user(const string& server_name,
const string& cli_term_name,
uint32_t cli_session_id,
const vector<string>& command_global_name,
const vector<string>& argv);
int cli_set_log_output_cli(const string& server_name,
const string& cli_term_name,
uint32_t cli_session_id,
const vector<string>& command_global_name,
const vector<string>& argv);
int cli_set_log_output_file(const string& server_name,
const string& cli_term_name,
uint32_t cli_session_id,
const vector<string>& command_global_name,
const vector<string>& argv);
int cli_set_log_output_remove_cli(const string& server_name,
const string& cli_term_name,
uint32_t cli_session_id,
const vector<string>& command_global_name,
const vector<string>& argv);
int cli_set_log_output_remove_file(const string& server_name,
const string& cli_term_name,
uint32_t cli_session_id,
const vector<string>& command_global_name,
const vector<string>& argv);
int send_process_command(const string& server_name,
const string& cli_term_name,
const uint32_t cli_session_id,
const vector<string>& command_global_name,
const vector<string>& argv);
XorpFd sock_serv_open();
int sock_serv_close();
CliClient *add_connection(XorpFd input_fd, XorpFd output_fd,
bool is_network,
const string& startup_cli_prompt,
string& error_msg);
int delete_connection(CliClient *cli_client, string& error_msg);
void accept_connection(XorpFd fd, IoEventType type);
bool is_allow_cli_access(const IPvX& ipvx) const;
XorpFd _cli_socket; // The CLI listening socket
unsigned short _cli_port; // The CLI port (network-order) to
// listen on for new connections.
list<CliClient *> _client_list; // The list with the CLI clients
uint32_t _next_session_id; // Used to assign unique session IDs.
string _startup_cli_prompt; // The CLI prompt on startup
CliCommand _cli_command_root; // The root of the CLI commands
SenderProcessCallback _send_process_command_callback;
// The callback pethod that is invoked whenever a CliClient is deleted
CliClientDeleteCallback _cli_client_delete_callback;
list<IPvXNet> _enable_cli_access_subnet_list;
list<IPvXNet> _disable_cli_access_subnet_list;
//
// Debug and test-related state
//
bool _is_log_trace; // If true, enable XLOG_TRACE()
};
//
// Global variables
//
//
// Global functions prototypes
//
#endif // __CLI_CLI_NODE_HH__
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