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find_ip_and_reply.h File Reference

#include <netinet/in.h>
#include "packets_data.h"
#include "mysql_interface.h"

Go to the source code of this file.

Defines
#define	DHCP_INVALID_MESSAGE_TYPE   -100
	Return value for the function find_ip_and_reply(). Invailid DHCP message type.
#define	DHCP_NO_DYNAMIC_IP_FOUND   -101
	Return value for the function find_ip_and_reply(). Could not find any available IP address.
#define	DHCP_LEASE_INCONSTANCY   -102
	Return value for the function find_ip_and_reply(). An unexpected error occured while trying to retrieve the lease value.
#define	DHCP_NO_DYNAMIC_IP_FOUND_RELEASE   -103
	Return value for the function find_ip_and_reply(). The server received a DHCP RELEASE from a user that got a dynamic IP address. But the server could not find any busy IP address associated to this user within the pool. This is not a problem. We just ignore this event.
#define	DHCP_RADONLINE_MYSQL_SQL_PROBLEM   -104
	Return value for the function find_ip_and_reply(). Could not send a (START or STOP) ticket to Radonline. Some SQL error occured.
#define	DHCP_RADONLINE_MYSQL_UNEXPECTED_ERROR   -105
	Return value for the function find_ip_and_reply(). Could not send a (START or STOP) ticket to Radonline. An unexpected SQL error occured.
#define	DHCP_MYDNS_MYSQL_SQL_PROBLEM   -106
	Return value for the function find_ip_and_reply(). Could not send a (START or STOP) ticket to MyDqs database. Some SQL error occured.
#define	DHCP_MYDNS_MYSQL_UNEXPECTED_ERROR   -107
	Return value for the function find_ip_and_reply(). Could not send a (START or STOP) ticket to MyDqs database. An unexpected SQL error occured.
Functions
int	find_ip_and_reply (struct smysql *mysql_info_read, struct smysql *mysql_info_read_write, struct smysql *mysql_radonline, struct smysql *mysql_mydns, struct mysql_tables *mysql_tables, struct dhcp_packet *packet, struct global_config *config, int sck, unsigned long int broadcast, unsigned long int server_ip, struct sockaddr_in *client_address)
	Try to find an IP address for the client and send a DHCP response. More...

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Detailed Description

Header file for the big functionnality that finds the IP address and reply to the client. Return values start from -100.

Definition in file find_ip_and_reply.h.

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Function Documentation

int find_ip_and_reply (  struct smysql *    mysql_info_read, struct smysql *    mysql_info_read_write, struct smysql *    mysql_radonline, struct smysql *    mysql_mydns, struct mysql_tables *    mysql_tables, struct dhcp_packet *    packet, struct global_config *    config, int    sck, unsigned long int    broadcast, unsigned long int    server_ip, struct sockaddr_in *    client_address )

Try to find an IP address for the client and send a DHCP response. Author: Denis BEURIVE Parameters: mysql_info_read  Pointer to a 'smysql' data structure that contains the MySql configuration for the 'read only' database. mysql_info_read_write  Pointer to a 'smysql' data structure that contains the MySql configuration for the 'read/write' database. mysql_radonline  Pointer to a 'smysql' data structure that contains the MySql configuration for the 'Radonline' database. mysql_mydns  Pointer to a 'smysql' data structure that contains the MySql configuration for the 'MyDns' database. mysql_tables  pointer to a structure that contains the client's context (all database tables). packet  Pointer to a 'dhcp_packet' data structure that contains the DHCP packet. config  Pointer to a 'global_config' data structure that contains the main configuration for the server. sck  Descriptor og the socket used by the server to receive requests, and reply to these requests. broadcast  4 bytes long integer that contains the binary representation (in network byte order) of the broadcast IP address. server_ip  4 bytes long integer that contains the binary representation (in network byte order) of the server IP address. client_address  client_address Pointer to a 'sockaddr_in' data structure that contains the internet address of the incoming packet's sender. If the configuration tag 'enable-broadcast-responses' is set to "yes", then the parameter 'client_address' is never used (since the server always send broadcasts). Returns: Upon successful completion, the function returns the value 0. Otherwize, the function may return one of the following values: MYSQL_INTERFACE_REQUEST_SKIPED MYSQL_INTERFACE_CONNECTION_LOST MYSQL_INTERFACE_RECONNECTION_FAILED MYSQL_INTERFACE_SQL_PROBLEM MYSQL_INTERFACE_MORE_THAN_ONE MYSQL_INTERFACE_UNEXPECTED_ERROR MYSQL_INTERFACE_NO_TIMESTAMP MYSQL_INTERFACE_NO_LEASE_ID MYSQL_INTERFACE_NOT_FOUND DHCP_NO_DYNAMIC_IP_FOUND DHCP_INVALID_MESSAGE_TYPE DHCP_LEASE_INCONSTANCY DHCP_NO_DYNAMIC_IP_FOUND_RELEASE DHCP_RADONLINE_MYSQL_SQL_PROBLEM DHCP_RADONLINE_MYSQL_UNEXPECTED_ERROR DHCP_MYDNS_MYSQL_SQL_PROBLEM DHCP_MYDNS_MYSQL_UNEXPECTED_ERROR Remarks: Make sure to call function packets_parse_options() before (see documentation for function packets_parse_options(), which needs some initialisations). The context should have been loaded first using the function load_context(). A fix has been made in order to avoid MyDns manipulation for the VIDEO VCI. The VCI number is hard coded. Definition at line 117 of file find_ip_and_reply.c. References mysql_tables::abonne_ip, mysql_tables::abonnes, table_abonnes::abonnes_id, dhcp_packet::ctrl, global_config::debug, DHCP_INVALID_MESSAGE_TYPE, DHCP_LEASE_INCONSTANCY, DHCP_MYDNS_MYSQL_SQL_PROBLEM, DHCP_MYDNS_MYSQL_UNEXPECTED_ERROR, DHCP_NO_DYNAMIC_IP_FOUND, DHCP_NO_DYNAMIC_IP_FOUND_RELEASE, DHCP_RADONLINE_MYSQL_SQL_PROBLEM, DHCP_RADONLINE_MYSQL_UNEXPECTED_ERROR, DHCPDISCOVER, DHCPINFORM, DHCPRELEASE, DHCPREQUEST, DYNAMIC_IP, find_ip_in_vlan_pool(), get_ip_from_pool(), get_lease_from_context(), mysql_tables::ip_lease, load_abonne_ip(), global_config::log_file, table_abonnes::login_radius, my_syslog(), MYDNS_START, MYDNS_STOP, MYSQL_CONNECTION_LOST, MYSQL_INTERFACE_CONNECTION_LOST, MYSQL_INTERFACE_MORE_THAN_ONE, MYSQL_INTERFACE_NO_IP_FOUND, MYSQL_INTERFACE_NO_LEASE_ID, MYSQL_INTERFACE_NO_TIMESTAMP, MYSQL_INTERFACE_NOT_FOUND, MYSQL_INTERFACE_RECONNECTION_FAILED, MYSQL_INTERFACE_REQUEST_SKIPED, MYSQL_INTERFACE_SQL_PROBLEM, MYSQL_INTERFACE_UNEXPECTED_ERROR, MYSQL_RECONNECTION_FAILED, MYSQL_REQUEST_SKIPED, MYSQL_SQL_PROBLEM, MYSQL_UNEXPECTED_ERROR, nack_flag_abonne(), packets_get_message_type(), packets_get_vlan_id(), packets_send_ack(), packets_send_nack(), packets_send_offer(), mysql_tables::pool, RADONLINE_START, RADONLINE_STOP, release_ip_from_pool(), reply_to_inform(), send_to_mydns(), send_to_radonline(), STATIC_IP, and mysql_tables::vlan. Referenced by main().

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