ABC80
/
max80_fw
zrkadlo https://git.zytor.com/abc80/max80/fw.git/


			
				
					
						
						
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							#define MODULE "httpd"

#include "common.h"
#include "fw.h"
#include "httpd.h"

static httpd_handle_t httpd;

esp_err_t httpd_firmware_upgrade_handler(httpd_req_t *req)
{
    char *response;
    esp_err_t err;
    int rv, len;

    printf("[POST] len = %zu uri = \"%s\"\n",
	   req->content_len, req->uri);

    if (!req->content_len) {
	return httpd_resp_send_err(req, 411, NULL);
    }

    rv = firmware_update((read_func_t)httpd_req_recv, (token_t)req);

    if (rv == FWUPDATE_ERR_IN_PROGRESS)
	return httpd_resp_send_err(req, 409, "Firmware update already in progress");
    else if (rv)
	return httpd_resp_send_err(req, 500, "Firmware update failed");

    len = asprintf(&response,
		   "<!DOCTYPE html>\r\n"
		   "<html>\r\n"
		   "<head>\r\n"
		   "<title>Firmware update completed</title>\r\n"
		   "</head>\r\n"
		   "<body>\r\n"
		   "<h1>Firmware update completed</h1>\r\n"
		   "<p>Rebooting in %u seconds</p>\r\n"
		   "</body>\r\n"
		   "</html>\r\n",
		   reboot_delayed());

    /* 200 and text/html are the response defaults, no need to set */
    err = httpd_resp_send(req, response, len);
    free(response);

    return err;
}

static esp_err_t httpd_get_handler(httpd_req_t *req)
{
    char *response;
    int len;
    esp_err_t err;

    len = asprintf(&response,
		   "<!DOCTYPE html>\n"
		   "<html>\n"
		   "<head>\n"
		   "<title>Hello, World!</title>\n"
		   "</head>\n"
		   "<body>\n"
		   "<p>Hello, World!</p>\n"
		   "<p>GET uri = <tt>%s</tt></p>\n"
		   "</pre>\n"
		   "</body>\n"
		   "</html>\n",
		   req->uri);

    /* 200 and text/html are the response defaults, no need to set */
    err = httpd_resp_send(req, response, len);
    free(response);

    return err;
}

static const httpd_uri_t uri_get = {
    .uri      = "/",
    .method   = HTTP_GET,
    .handler  = httpd_get_handler,
    .user_ctx = NULL
};

static const httpd_uri_t uri_firmware_upgrade = {
    .uri      = "/firmware-upgrade",
    .method   = HTTP_POST,
    .handler  = httpd_firmware_upgrade_handler,
    .user_ctx = NULL
};

void my_httpd_stop(void)
{
    if (httpd) {
	esp_unregister_shutdown_handler(my_httpd_stop);
	httpd_stop(httpd);
	httpd = NULL;
    }
}

void my_httpd_start(void)
{
    httpd_config_t config = HTTPD_DEFAULT_CONFIG();
    httpd_handle_t server;

    if (httpd)
	return;

    config.task_priority = 2;

    printf("[HTTP] Default stack size: %zu\n", config.stack_size);
    config.stack_size <<= 2;
    printf("[HTTP] Requesting stack size: %zu\n", config.stack_size);

    if (httpd_start(&server, &config) != ESP_OK)
      return;

    httpd = server;
    httpd_register_uri_handler(httpd, &uri_get);
    httpd_register_uri_handler(httpd, &uri_firmware_upgrade);
    esp_register_shutdown_handler(my_httpd_stop);
    printf("[HTTP] httpd started\n");
}