httpdownloader.c File Reference

HTTP File Downloader Example Implementation.

Copyright (c) 2018 Microchip Technology Inc. and its subsidiaries.

#include <errno.h>
#include "asf.h"
#include "httpdownloader.h"
#include "FreeRTOS.h"
#include "iot/http/http_client.h"
#include "osprintf.h"
#include "lwip/ip.h"
#include "lwip/api.h"
#include "lwip/tcpip.h"
#include "lwip/sockets.h"
#include "os/include/net_init.h"
#include "os/include/m2m_wifi_ex.h"
#include "tinyservices.h"
#include "conf_wilc.h"
#include "ota_fw_update/ota_fw_update.h"
#include <string.h>
#include <stdio.h>

Functions
static void	add_state (download_state mask)
	Add state parameter at download processing state. More...
static void	clear_state (download_state mask)
	Clear state parameter at download processing state. More...
static int	configure_http_client (void)
	Configure HTTP client module. More...
static void	configure_timer (void)
	Configure Timer module. More...
static int	dismantle_http_client (void)
	close HTTP client module. More...
static void	http_client_callback (struct http_client_module *module_inst, int type, union http_client_data *data)
	Callback of the HTTP client. More...
int	http_downloader (char *fileURL)
	http downloader function. More...
static void	init_state (void)
	Initialize download state to not ready. More...
static bool	is_state_set (download_state mask)
	File download processing state check. More...
void	setFirmwareDownload (int val)
static void	start_download (char *fileURL)
	Start file download via HTTP connection. More...
static void	store_file_packet (char *data, uint32_t length)
	Ignore data, but calculate the total received size TODO: Store received packet to file. More...

Variables
static download_state	down_state = NOT_READY
	File download processing state. More...
char *	gfileURL
struct http_client_module	http_client_module_inst
	Instance of HTTP client module. More...
static uint32_t	http_file_size = 0
	Http content length. More...
static int	is_firmware = 0
	File name to download. More...
static uint32_t	received_file_size = 0
	Receiving content length. More...
struct sw_timer_module	swt_module_inst
	Instance of Timer module. More...

static void add_state ( download_state  mask )

static

Add state parameter at download processing state.

Parameters

[in]

mask

Check download_state.

References down_state.

Referenced by http_client_callback(), and store_file_packet().

static void clear_state ( download_state  mask )

static

Clear state parameter at download processing state.

Parameters

[in]

mask

Check download_state.

References down_state.

Referenced by http_client_callback().

static int configure_http_client ( void  )

static

Configure HTTP client module.

References FAILURE, http_client_callback(), http_client_get_config_defaults(), http_client_init(), http_client_module_inst, http_client_register_callback(), MAIN_BUFFER_MAX_SIZE, osprintf(), http_client_config::recv_buffer_size, SUCCESS, swt_module_inst, and http_client_config::timer_inst.

Referenced by http_downloader().

static void configure_timer ( void  )

static

Configure Timer module.

References sw_timer_enable(), sw_timer_get_config_defaults(), sw_timer_init(), and swt_module_inst.

Referenced by http_downloader().

static int dismantle_http_client ( void  )

static

close HTTP client module.

References FAILURE, http_client_close(), http_client_deinit(), http_client_module_inst, osprintf(), and SUCCESS.

Referenced by http_downloader().

static void http_client_callback ( struct http_client_module *  module_inst, int  type, union http_client_data *  data  )

static

Callback of the HTTP client.

Parameters

[in]	module_inst	Module instance of HTTP client module.
[in]	type	Type of event.
[in]	data	Data structure of the event. http_client_data

References add_state(), CANCELED, clear_state(), COMPLETED, http_client_data_recv_response::content, http_client_data_recv_response::content_length, http_client_data_recv_chunked_data::data, http_client_data::disconnected, DOWNLOADING, GET_REQUESTED, gfileURL, HTTP_CLIENT_CALLBACK_DISCONNECTED, HTTP_CLIENT_CALLBACK_RECV_CHUNKED_DATA, HTTP_CLIENT_CALLBACK_RECV_RESPONSE, HTTP_CLIENT_CALLBACK_REQUESTED, HTTP_CLIENT_CALLBACK_SOCK_CONNECTED, http_file_size, http_client_data_recv_chunked_data::is_complete, is_state_set(), http_client_data_recv_chunked_data::length, MAIN_BUFFER_MAX_SIZE, osprintf(), http_client_data_disconnected::reason, received_file_size, http_client_data::recv_chunked_data, http_client_data::recv_response, http_client_data_recv_response::response_code, start_download(), and store_file_packet().

Referenced by configure_http_client().

int http_downloader

(

char *

fileURL

)

http downloader function.

References COMPLETED, configure_http_client(), configure_timer(), dismantle_http_client(), FAILURE, gfileURL, init_state(), is_state_set(), pvPortMalloc(), start_download(), SUCCESS, and vPortFree().

Referenced by wilc_task_1().

static void init_state ( void  )

static

Initialize download state to not ready.

References down_state, and NOT_READY.

Referenced by http_downloader().

static bool is_state_set ( download_state  mask )

inlinestatic

File download processing state check.

Parameters

[in]

mask

Check download_state.

Returns

true if this state is set, false otherwise.

References down_state.

Referenced by http_client_callback(), http_downloader(), start_download(), and store_file_packet().

void setFirmwareDownload

(

int

val

)

References is_firmware.

static void start_download ( char *  fileURL )

static

Start file download via HTTP connection.

References CANCELED, COMPLETED, DOWNLOADING, GET_REQUESTED, http_client_module_inst, http_client_recv_response(), http_client_send_request(), HTTP_METHOD_GET, is_state_set(), NULL, and osprintf().

Referenced by http_client_callback(), and http_downloader().

static void store_file_packet ( char *  data, uint32_t  length  )

static

Ignore data, but calculate the total received size TODO: Store received packet to file.

Parameters

[in]	data	Packet data.
[in]	length	Packet data length.

References add_state(), CANCELED, COMPLETED, DOWNLOADING, http_file_size, is_firmware, is_state_set(), NULL, osprintf(), received_file_size, and SUCCESS.

Referenced by http_client_callback().

download_state down_state = NOT_READY

static

File download processing state.

Referenced by add_state(), clear_state(), init_state(), and is_state_set().

char* gfileURL

Referenced by http_client_callback(), and http_downloader().

struct http_client_module http_client_module_inst

Instance of HTTP client module.

Referenced by configure_http_client(), dismantle_http_client(), and start_download().

uint32_t http_file_size = 0

static

Http content length.

Referenced by http_client_callback(), and store_file_packet().

int is_firmware = 0

static

File name to download.

Referenced by setFirmwareDownload(), and store_file_packet().

uint32_t received_file_size = 0

static

Receiving content length.

Referenced by http_client_callback(), and store_file_packet().

struct sw_timer_module swt_module_inst

Instance of Timer module.

Referenced by configure_http_client(), and configure_timer().