4 * This file is part of BeRTOS.
6 * Bertos is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * As a special exception, you may use this file as part of a free software
21 * library without restriction. Specifically, if other files instantiate
22 * templates or use macros or inline functions from this file, or you compile
23 * this file and link it with other files to produce an executable, this
24 * file does not by itself cause the resulting executable to be covered by
25 * the GNU General Public License. This exception does not however
26 * invalidate any other reasons why the executable file might be covered by
27 * the GNU General Public License.
29 * Copyright 2011 Develer S.r.l. (http://www.develer.com/)
33 * \author Andrea Righi <arighi@develer.com>
34 * \author Daniele Basile <asterix@develer.com>
36 * \brief Simple Http server.
38 * This simple web server read the site's pages from SD card, and manage
39 * the cases where SD is not present or page not found, using embedded pages.
40 * Quering from browser some cgi page, the server return a json dictionary.
46 #include "hw/hw_http.h"
48 #include "hw/hw_adc.h"
49 #include "hw/hw_sdram.h"
50 #include "hw/hw_led.h"
51 #include "hw/hw_lcd.h"
53 // Define logging setting (for cfg/log.h module).
55 #define LOG_VERBOSITY 0
57 #include <cfg/debug.h>
60 #include <cpu/power.h>
62 #include <drv/timer.h>
65 #include <drv/dmac_sam3.h>
67 #include <drv/lcd_hx8347.h>
69 #include <kern/proc.h>
70 #include <kern/monitor.h>
74 #include <netif/ethernetif.h>
77 #include <lwip/ip_addr.h>
78 #include <lwip/netif.h>
79 #include <lwip/tcpip.h>
80 #include <lwip/dhcp.h>
88 #include <icons/bertos.h>
94 /* Macro to unpack the ip addres from lwip format in 4 int*/
95 #define IP_ADDR_TO_INT_TUPLE(addr) \
96 (int)((addr) >> 0 & 0xff), \
97 (int)((addr) >> 8 & 0xff), \
98 (int)((addr) >> 16 & 0xff), \
99 (int)((addr) >> 24 & 0xff)
101 /* Network interface global variables */
102 static struct ip_addr ipaddr, netmask, gw;
103 static struct netif netif;
105 typedef struct BoardStatus
107 char local_ip[sizeof("123.123.123.123")];
108 char last_connected_ip[sizeof("123.123.123.123")];
109 uint16_t internal_temp;
114 static BoardStatus status;
115 static uint8_t raster[RAST_SIZE(LCD_WIDTH, LCD_HEIGHT)];
116 static Bitmap lcd_bitmap;
117 extern Font font_gohu;
118 static int lcd_brightness = LCD_BACKLIGHT_MAX;
121 static void init(void)
123 /* Enable all the interrupts */
126 /* Initialize debugging module (allow kprintf(), etc.) */
128 /* Initialize system timer */
132 * Kernel initialization: processes (allow to create and dispatch
133 * processes using proc_new()).
140 /* Enable the adc to read internal temperature sensor */
146 lcd_setBacklight(lcd_brightness);
148 gfx_bitmapInit(&lcd_bitmap, raster, LCD_WIDTH, LCD_HEIGHT);
149 gfx_setFont(&lcd_bitmap, &font_luBS14);
151 lcd_hx8347_blitBitmap(&lcd_bitmap);
152 lcd_hx8347_blitBitmap24(10, 52, BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, bmp_logo);
155 text_xprintf(&lcd_bitmap, 1, 0, TEXT_CENTER, "Brightness: %d", lcd_brightness);
156 lcd_hx8347_blitBitmap(&lcd_bitmap);
158 /* Initialize TCP/IP stack */
159 tcpip_init(NULL, NULL);
161 /* Bring up the network interface */
162 netif_add(&netif, &ipaddr, &netmask, &gw, NULL, ethernetif_init, tcpip_input);
163 netif_set_default(&netif);
164 netif_set_up(&netif);
168 static NORETURN void proc_displayRefresh(void)
173 //LOG_INFO("Refresh display\n");
174 status.internal_temp = hw_convertToDegree(adc_read(ADC_TEMPERATURE_CH));
182 static uint8_t tx_buf[2048];
185 * Return a JSON string of board status.
187 static int cgi_status(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
194 uint16_t volt = ADC_RANGECONV(adc_read(1), 0, 3300);
195 //Update board status.
196 sprintf(status.last_connected_ip, "%d.%d.%d.%d", IP_ADDR_TO_INT_TUPLE(client->pcb.ip->remote_ip.addr));
197 sprintf(status.local_ip, "%d.%d.%d.%d", IP_ADDR_TO_INT_TUPLE(client->pcb.ip->local_ip.addr));
198 sprintf((char *)tx_buf, "{ \"local_ip\":\"%s\", \"last_connected_ip\":\"%s\", \
201 \"up_time\":%ld, \"tot_req\":%d }",
202 status.local_ip, status.last_connected_ip,
203 status.internal_temp / 10, status.internal_temp % 10,
204 volt / 1000, volt % 1000,
205 status.up_time, status.tot_req);
210 netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
214 static int cgi_logo(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
221 netconn_write(client, bertos_logo_jpg, bertos_logo_jpg_len, NETCONN_NOCOPY);
226 * Return the internal micro temperature string.
228 static int cgi_temp(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
234 sprintf((char *)tx_buf, "[%d.%d]", status.internal_temp / 10, status.internal_temp % 10);
237 netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
243 * Return the board uptime.
245 static int cgi_uptime(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
253 uint32_t m = status.up_time / 60;
255 uint32_t s = status.up_time - (m * 60) - (h * 3600);
257 sprintf((char *)tx_buf, "[\"%ldh %ldm %lds\"]", h, m, s);
260 netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
265 * Return the VR1 potentiometer voltage.
267 static int cgi_resistor(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
273 uint16_t volt = ADC_RANGECONV(adc_read(1), 0, 3300);
274 kprintf("volt %d\n", volt);
275 sprintf((char *)tx_buf, "[ \"%d.%dV\" ]", volt / 1000, volt % 1000);
278 netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
283 #define CGI_LED_ID_KEY "n"
284 #define CGI_LED_CMD_KEY "set"
286 static char key_value[80];
289 * Reply to client the request string.
291 static int cgi_led(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
297 char *query_str = strstr(name, "?") + 1;
298 size_t query_str_len = strlen(query_str);
302 int len = http_tokenizeGetRequest(query_str, query_str_len);
304 LOG_INFO("Found %d key/value pair\n", len);
306 if (http_getValue(query_str, query_str_len, CGI_LED_ID_KEY, key_value, sizeof(key_value)) < 0)
308 LOG_ERR("key %s, not found\n", CGI_LED_ID_KEY);
312 LOG_INFO("Found key %s = %s\n", CGI_LED_ID_KEY, key_value);
313 led_id = atoi(key_value);
316 if (http_getValue(query_str, query_str_len, CGI_LED_CMD_KEY, key_value, sizeof(key_value)) < 0)
318 LOG_ERR("key %s, not found\n", CGI_LED_CMD_KEY);
322 LOG_INFO("Found key %s = %s\n", CGI_LED_CMD_KEY, key_value);
323 led_cmd = atoi(key_value);
334 sprintf((char *)tx_buf, "{\"n\":%d, \"set\":,%d}", led_id, led_cmd);
337 netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
341 http_sendInternalErr(client);
346 * Reply to client the request string.
348 static int cgi_echo(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
353 netconn_write(client, recv_buf, recv_len, NETCONN_COPY);
360 * Default function that http server call every client request, if it doesn't match a cgi table.
361 * In this implementation all client request are associate to real file stored on FAT file
362 * sistem on SD card. If the file there is not on SD card the server reply to client the
363 * error File not found, and send an harcoded page. In the same way, the server reply
364 * error page if the SD card is not present.
367 static int http_htmPageLoad(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
372 if (SD_CARD_PRESENT())
375 // SD fat filesystem context
381 bool sd_ok = sd_init(&sd, NULL, 0);
384 LOG_INFO("Mount FAT filesystem.\n");
385 result = f_mount(0, &fs);
388 LOG_ERR("Mounting FAT volumes error[%d]\n", result);
395 result = fatfile_open(&in_file, name, FA_OPEN_EXISTING | FA_READ);
400 LOG_INFO("Opened file '%s' size %ld\n", name, in_file.fat_file.fsize);
402 //http_sendOk(client);
404 while (count < in_file.fat_file.fsize)
406 int len = kfile_read(&in_file.fd, tx_buf, sizeof(tx_buf));
407 netconn_write(client, tx_buf, len, NETCONN_COPY);
411 kfile_flush(&in_file.fd);
412 kfile_close(&in_file.fd);
414 LOG_INFO("Sent: %d\n", count);
418 LOG_ERR("Unable to open file: '%s' error[%d]\n", name, result);
419 http_sendFileNotFound(client);
420 netconn_write(client, http_file_not_found, http_file_not_found_len - 1, NETCONN_NOCOPY);
425 LOG_INFO("Umount FAT filesystem.\n");
429 http_sendFileNotFound(client);
430 netconn_write(client, http_sd_not_present, http_sd_not_present_len, NETCONN_NOCOPY);
437 * Return to client a string that display the CHIP ID information.
438 * See datasheet for more detail.
440 static int cgi_chipInfo(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
446 sprintf((char *)tx_buf, "{ \"core_name\":\"%s\", \"arch_name\":\"%s\", \"sram_size\":\"%s\",\
447 \"flash_size\":\"%s\", \"mem_boot_type\":\"%s\" }",
448 chipid_eproc_name(CHIPID_EPRCOC()),
449 chipid_archnames(CHIPID_ARCH()),
450 chipid_sramsize(CHIPID_SRAMSIZ()),
451 chipid_nvpsize(CHIPID_NVPSIZ()),
452 chipid_nvptype(CHIPID_NVTYP()));
455 netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
461 static int cgi_error(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
472 * Static cgi table where we associate callback to page.
474 static HttpCGI cgi_table[] =
476 { CGI_MATCH_WORD, "echo", cgi_echo },
477 { CGI_MATCH_NAME, "get_temperature", cgi_temp },
478 { CGI_MATCH_NAME, "get_uptime", cgi_uptime },
479 { CGI_MATCH_NAME, "get_resistor", cgi_resistor },
480 { CGI_MATCH_NAME, "set_led", cgi_led },
481 { CGI_MATCH_NAME, "error", cgi_error },
482 { CGI_MATCH_WORD, "status", cgi_status },
483 { CGI_MATCH_NAME, "get_chipinfo", cgi_chipInfo },
484 { CGI_MATCH_NAME, "bertos_logo_jpg", cgi_logo },
485 { CGI_MATCH_NONE, NULL, NULL }
491 struct netconn *server;
493 /* Hardware initialization */
495 http_init(http_htmPageLoad, cgi_table);
497 proc_new(proc_displayRefresh, NULL, KERN_MINSTACKSIZE * 2, NULL);
500 while (!netif.ip_addr.addr)
501 timer_delay(DHCP_FINE_TIMER_MSECS);
502 kprintf("dhcp ok: ip = %d.%d.%d.%d\n", IP_ADDR_TO_INT_TUPLE(netif.ip_addr.addr));
504 server = netconn_new(NETCONN_TCP);
505 netconn_bind(server, IP_ADDR_ANY, 80);
506 netconn_listen(server);