mbtk/mbtk_lib/src/mbtk_fota.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.h>
#include <libubox/blobmsg_json.h>
#include "libubus.h"
#include "mbtk_fota.h"


#ifdef DEBUG
    #define fota_log(...)                    printf(__VA_ARGS__)
#else
    #define fota_log(...)
#endif

#define UNUSEDPARAM(param) (void)param;
#define OTA_MAX_STRING_LEN	128

static struct ubus_context    *fota_ubus_ctx = NULL;
static uint32_t	 		      fota_request_id;
static struct ubus_subscriber notification_event;
static pthread_t              fota_status_pthread;
static struct blob_buf b;
static fota_callback fota_cb = NULL;

enum {
	ATTR_SMSGPS,
	ATTR_SMSGPS_MAX,
};

static const struct blobmsg_policy ota_info_attr_policy[] = {
	[ATTR_SMSGPS] ={.name = "notification",  .type = BLOBMSG_TYPE_STRING,},
};

/**
 *  \brief strstr_n
 *
 *  find string return number
 *
 *  \param param
 *  \return return type
 */
static int strstr_n(const char *s1, const char *s2)
{
    int n;
    int strlen = 0;

    if(*s2) {
        while(*s1) {
            for(n = 0; *(s1+n) == *(s2 + n); n++) {
                if(!*(s2 + n + 1)) {
                    strlen++;
                    return strlen;
                }
            }
            s1++;
            strlen++;
        }
        return 0;
    }
    else
        return 0;
}

static int otad_notify(struct ubus_context* ctx, struct ubus_object* obj,
                       struct ubus_request_data* req, const char* method,
                       struct blob_attr* msg)
{
    UNUSEDPARAM(ctx);
    UNUSEDPARAM(obj);
    UNUSEDPARAM(req);
    UNUSEDPARAM(method);
    // User can get downloading process information from here
    int ret, len;
    char progress[4] = {0};
	char *notify_str;

	struct blob_attr *tb[ATTR_SMSGPS_MAX];
	ret = blobmsg_parse(ota_info_attr_policy, ARRAY_SIZE(ota_info_attr_policy), tb,
						blob_data(msg), blob_len(msg));

	if (ret || !tb[ATTR_SMSGPS]) {
		printf("invalid SMS\n");
		return -1;
	}

	notify_str = blobmsg_get_string(tb[ATTR_SMSGPS]);
    len = strlen(notify_str);
    fota_log("%s : %s\r\n", __FUNCTION__, notify_str);
    if (strstr_n(notify_str, "start")) {
        fota_cb(0, 0);
    } else if (strstr_n(notify_str, "end[1]")) {
        fota_cb(0, 100);
        printf("download firmware success!\r\n");
    } else if (strstr_n(notify_str, "end[0]")) {
        fota_cb(1, 100);
    }
    ret = strstr_n(notify_str, "progress");
    if (ret) {
        memcpy(progress, &notify_str[ret + 8], len - ret - 9);
        fota_cb(0, atoi(progress));
    }
    return 0;
}

static void otad_subscriber_remove_cb(struct ubus_context* ctx,
                                      struct ubus_subscriber* obj, uint32_t id)
{
    UNUSEDPARAM(ctx);
    UNUSEDPARAM(obj);
    UNUSEDPARAM(id);
    fota_log("%s,%d\n", __FUNCTION__, __LINE__);
}


/*******************************************************************************
* @brief write firmware package, the firmware package is written in segments.
         and The result of the write is output by calling the callback function.
         the firmware package size must less than 32MB
  @param
           fname: firmware package file
    segment_size: the length of once write, recommending 3*1024*1024 bytes
  @return
        if success return 0, else return -1
 *******************************************************************************/
int mbtk_fota_fw_write(char* fname, int segment_size)
{
    static struct ubus_request req;
    int _segment_size;
    blob_buf_init(&b, 0);
    blobmsg_add_string(&b, "url", fname);
    blobmsg_add_u32(&b, "type", 2);
    blobmsg_add_u32(&b, "sync", 1);
    _segment_size = segment_size;
    if (_segment_size > 1024) {
        blobmsg_add_u32(&b, "segment_size", _segment_size);
    }
    blobmsg_add_u32(&b, "sync", 1);
    ubus_invoke_async(fota_ubus_ctx, fota_request_id, "download", b.head, &req);
    ubus_complete_request_async(fota_ubus_ctx, &req);
    return 0;

    
}


/*******************************************************************************
* @brief download firmware by url, and write firmware package, the firmware
         package is written in segments. The result of the write is output by
         calling the callback function. the firmware package size must less than
         32MB
  @param
                 url: [IN] the address of download firmware package file, the url
                           support http or https protocol.
        segment_size: [IN] the length of once write, recommending 3*1024*1024 bytes
        conn_timeout: [IN] timeout to connect to the server, if set 0 that means
                           switch to the default build-in connection timeout(300s)
    download_timeout: [IN] timeout for download the firmware file. if set 0 that means
                           it never time out
  @return
        if success return 0, else return -1
 *******************************************************************************/
int mbtk_fota_fw_write_by_url(char* url, int segment_size,
                            int conn_timeout, int download_timeout)
{
    static struct ubus_request req;
    int _segment_size;
    blob_buf_init(&b, 0);
    blobmsg_add_string(&b, "url", url);
    blobmsg_add_string(&b, "username", "user name");
    blobmsg_add_u32(&b, "type", 0);
    blobmsg_add_u32(&b, "sync", 1);
    _segment_size = segment_size;
    if (_segment_size > 1024) {
        blobmsg_add_u32(&b, "segment_size", _segment_size);
    }
    blobmsg_add_u32(&b, "sync", 1);
    ubus_invoke_async(fota_ubus_ctx, fota_request_id, "download", b.head, &req);
    ubus_complete_request_async(fota_ubus_ctx, &req);
    return 0;
}
/*******************************************************************************
* @brief reboot system and clear env
  @param
   is_reboot: if set 1, after fota success, reboot system
  @return
        if success return 0, else return -1
 *******************************************************************************/
int mbtk_fota_done(int is_reboot)
{
    int ret;

    ret = pthread_cancel(fota_status_pthread);
    fota_log("kill pthread : %d \n", ret);
    pthread_join(fota_status_pthread, NULL);
    do {
        ret = pthread_kill(fota_status_pthread, 0);
        fota_log("kill pthread: %d \n", ret);
        if (ret == ESRCH) {
            fota_log("The specified thread does not exist or has terminated\n");
        } else if (ret == EINVAL) {
            fota_log("Useless signal\n");
        } else {
            fota_log("The thread exists\n");
        }
        usleep(100000);
    } while (0 == ret);


    ubus_free(fota_ubus_ctx);
    uloop_done();

    fota_cb = NULL;

    if (is_reboot) {
        system("sync");
        system("reboot");
    }
    return 0;
}

void* mbtk_fota_thread(void* argc)
{
    int ret, retries = 0;
    UNUSEDPARAM(argc);

    //register for ril indication
    ret = ubus_register_subscriber(fota_ubus_ctx, &notification_event);
    if (ret) {
        fota_log("%s,%d\n", __FUNCTION__, __LINE__);
        pthread_exit(NULL);
    }
    notification_event.cb = otad_notify;
    notification_event.remove_cb = otad_subscriber_remove_cb;

    ubus_subscribe(fota_ubus_ctx, &notification_event, fota_request_id);
    uloop_run();
    ubus_unsubscribe(fota_ubus_ctx, &notification_event, fota_request_id);
    pthread_exit(NULL);

    return NULL;
}


int mbtk_fota_init(fota_callback cb)
{
    int id;
    int retries = 0;

    /*create ubus loop to listen to RIL event*/
    uloop_init();
    fota_ubus_ctx = ubus_connect(NULL);
    if (!fota_ubus_ctx) {
        fota_log("%s,%d\n", __FUNCTION__, __LINE__);
        uloop_done();
        return 0;
    }

    ubus_add_uloop(fota_ubus_ctx);

    do {
        //register for ril request
        retries = 0;
        if (ubus_lookup_id(fota_ubus_ctx, "ota", &fota_request_id)) {
            fota_log("%s,%d\n", __FUNCTION__, __LINE__);
            sleep(1);
        } else {
            break;
        }
    } while (retries++ < 20);
    if (retries >= 20) {
        printf("%s,%d\n", __FUNCTION__, __LINE__);
        goto fail1;
    }
    pthread_create(&fota_status_pthread, NULL, (void*)mbtk_fota_thread, NULL);
    fota_cb = cb;
fail1:
    return 0;
}