cmd.c File Reference

#include <stddef.h>
#include <string.h>
#include "cmd.h"
#include "raw/raw.h"

Include dependency graph for cmd.c:

Macros
#define	__unused   __attribute__((unused))

Typedefs
typedef struct message *(*	cmd_handler_t) (struct usb_state *state, const struct message *request)
	Commands handler for U2FHID commands processing. More...
typedef struct cmd	cmd_t
	Command of U2FHID. More...

Functions
static struct message *	cmd_ping_handler (struct usb_state *state, const struct message *request)
static struct message *	cmd_msg_handler (struct usb_state *state, const struct message *request)
	The Handler for CMD_MSG. More...
static struct message *	cmd_lock_handler (struct usb_state *state, const struct message *request)
	The Handler for CMD_LOCK. More...
static struct message *	cmd_init_handler (struct usb_state *state, const struct message *request)
static struct message *	cmd_wink_handler (struct usb_state *state, const struct message *request)
static struct message *	cmd_sync_handler (struct usb_state *state, const struct message *request)
static struct message *	cmd_error_handler (struct usb_state *state, const struct message *request)
static cmd_handler_t	cmd_get_handler (uint8_t cmd)
	Get the command handler for a specific command. More...
const char *	cmd_strerror (int error_nb)
	Get the command error description. More...
struct message *	cmd_generate_error (uint32_t cid, uint8_t error)
	Generate an error response. More...
static struct message *	cmd_ping_handler (struct usb_state *state __attribute__((unused)), const struct message *request)
	The Handler for CMD_PING. More...
static struct message *	cmd_wink_handler (struct usb_state *state __attribute__((unused)), const struct message *request)
	The Handler for CMD_WINK. More...
static struct message *	cmd_init_handler (struct usb_state *state __attribute__((unused)), const struct message *request)
	The Handler for CMD_INIT. More...
static struct message *	cmd_sync_handler (struct usb_state *state __attribute__((unused)), const struct message *request)
	The Handler for CMD_SYNC. More...
static struct message *	cmd_error_handler (struct usb_state *state __attribute__((unused)), const struct message *request __attribute__((unused)))
	The Handler for CMD_ERROR. More...
struct message *	cmd_process (struct usb_state *state, const struct message *request)
	Process a command request. More...

Variables
static const cmd_t	cmds []
	Commands handlers for U2FHID commands processing, depending of the associated command. More...
static const size_t	cmds_nb = sizeof(cmds) / sizeof(cmds[0])
	Number of commands. More...

Macro Definition Documentation

#define __unused   __attribute__((unused))

Typedef Documentation

typedef struct message*(* cmd_handler_t) (struct usb_state *state, const struct message *request)

Commands handler for U2FHID commands processing.

typedef struct cmd cmd_t

Command of U2FHID.

Function Documentation

static struct message* cmd_error_handler ( struct usb_state *  state, const struct message *  request  )

static

static struct message* cmd_error_handler ( struct usb_state *state   __attribute__(unused), const struct message *request   __attribute__(unused)  )

static

The Handler for CMD_ERROR.

Parameters

state	The USB transport state.
request	The request.

Returns

The response.

struct message* cmd_generate_error	(	uint32_t	cid,
		uint8_t	error
	)

Generate an error response.

Parameters

cid	Channel id.
error	The error.

Returns

The respective error reponse generated

static cmd_handler_t cmd_get_handler ( uint8_t  cmd )

static

Get the command handler for a specific command.

Parameters

cmd	The command.

Returns

The command handler?

static struct message* cmd_init_handler ( struct usb_state *  state, const struct message *  request  )

static

static struct message* cmd_init_handler ( struct usb_state *state   __attribute__(unused), const struct message *  request  )

static

The Handler for CMD_INIT.

Parameters

state	The USB transport state.
request	The request

Returns

The response.

static struct message * cmd_lock_handler ( struct usb_state *  state, const struct message *  request  )

static

The Handler for CMD_LOCK.

Parameters

state	The USB transport state.
request	The request.

Returns

The response.

static struct message * cmd_msg_handler ( struct usb_state *  state, const struct message *  request  )

static

The Handler for CMD_MSG.

Parameters

state	The USB transport state.
request	The request.

Returns

The response.

static struct message* cmd_ping_handler ( struct usb_state *  state, const struct message *  request  )

static

static struct message* cmd_ping_handler ( struct usb_state *state   __attribute__(unused), const struct message *  request  )

static

The Handler for CMD_PING.

Parameters

state	The USB transport state.
request	The request.

Returns

The response.

struct message* cmd_process	(	struct usb_state *	state,
		const struct message *	request
	)

Process a command request.

Parameters

state	The USB transport state.
request	The command request message.

Returns

The reponse generated bu the request process.

< Invalid command

const char* cmd_strerror

(

int

error_nb

)

Get the command error description.

Parameters

error_nb

The error number.

Returns

The respective error description

< No error

< Invalid command

< Invalid parameter

< Invalid message length

< Invalide message sequencing

< Message has timed out

< Channel is busy

< Command requires channel lock

< Command sync failed

< Other unspecified error

static struct message* cmd_sync_handler ( struct usb_state *  state, const struct message *  request  )

static

static struct message* cmd_sync_handler ( struct usb_state *state   __attribute__(unused), const struct message *  request  )

static

The Handler for CMD_SYNC.

Parameters

state	The USB transport state.
request	The request.

Returns

The response.

static struct message* cmd_wink_handler ( struct usb_state *  state, const struct message *  request  )

static

static struct message* cmd_wink_handler ( struct usb_state *state   __attribute__(unused), const struct message *  request  )

static

The Handler for CMD_WINK.

Parameters

state	The USB transport state.
request	The request.

Returns

The response.

Variable Documentation

const cmd_t cmds[]

static

Initial value:

=
{
    {  (1 << ( 7 )) | 0x1 ,  cmd_ping_handler  },
    {  (1 << ( 7 )) | 0x3 ,   cmd_msg_handler   },
    {  (1 << ( 7 )) | 0x4 ,  cmd_lock_handler  },
    {  (1 << ( 7 )) | 0x6 ,  cmd_init_handler  },
    {  (1 << ( 7 )) | 0x8 ,  cmd_wink_handler  },
    {  (1 << ( 7 )) | 0x3c ,  cmd_sync_handler  },
    {  (1 << ( 7 )) | 0x3f , cmd_error_handler }
}

Commands handlers for U2FHID commands processing, depending of the associated command.

const size_t cmds_nb = sizeof(cmds) / sizeof(cmds[0])

static

Number of commands.