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;
106 #define GET_LED_STATUS(status, led_id) (((status) & BV((led_id))) >> (led_id))
107 #define CLEAR_LED_STATUS(status, led_id) ((status) &= ~BV((led_id)))
108 #define SET_LED_STATUS(status, led_id) ((status) |= BV((led_id)))
110 typedef struct BoardStatus
112 char local_ip[sizeof("123.123.123.123")];
113 char last_connected_ip[sizeof("123.123.123.123")];
115 uint16_t internal_temp;
120 static BoardStatus status;
121 static uint8_t raster[RAST_SIZE(LCD_WIDTH, LCD_HEIGHT)];
122 static Bitmap lcd_bitmap;
123 extern Font font_gohu;
124 static int lcd_brightness = LCD_BACKLIGHT_MAX;
127 static void init(void)
129 /* Enable all the interrupts */
132 /* Initialize debugging module (allow kprintf(), etc.) */
134 /* Initialize system timer */
138 * Kernel initialization: processes (allow to create and dispatch
139 * processes using proc_new()).
146 /* Enable the adc to read internal temperature sensor */
152 lcd_setBacklight(lcd_brightness);
154 gfx_bitmapInit(&lcd_bitmap, raster, LCD_WIDTH, LCD_HEIGHT);
155 gfx_setFont(&lcd_bitmap, &font_luBS14);
157 lcd_hx8347_blitBitmap(&lcd_bitmap);
158 lcd_hx8347_blitBitmap24(10, 52, BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, bmp_logo);
161 text_xprintf(&lcd_bitmap, 1, 0, TEXT_CENTER, "Brightness: %d", lcd_brightness);
162 lcd_hx8347_blitBitmap(&lcd_bitmap);
164 /* Initialize TCP/IP stack */
165 tcpip_init(NULL, NULL);
167 /* Bring up the network interface */
168 netif_add(&netif, &ipaddr, &netmask, &gw, NULL, ethernetif_init, tcpip_input);
169 netif_set_default(&netif);
170 netif_set_up(&netif);
174 static NORETURN void proc_displayRefresh(void)
179 //LOG_INFO("Refresh display\n");
180 status.internal_temp = hw_convertToDegree(adc_read(ADC_TEMPERATURE_CH));
188 static uint8_t tx_buf[2048];
191 * Return a JSON string of board status.
193 static int cgi_status(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
200 uint16_t volt = ADC_RANGECONV(adc_read(1), 0, 3300);
201 //Update board status.
202 sprintf(status.last_connected_ip, "%d.%d.%d.%d", IP_ADDR_TO_INT_TUPLE(client->pcb.ip->remote_ip.addr));
203 sprintf(status.local_ip, "%d.%d.%d.%d", IP_ADDR_TO_INT_TUPLE(client->pcb.ip->local_ip.addr));
205 sprintf((char *)tx_buf, "{ \"local_ip\":\"%s\",\"last_connected_ip\":\"%s\", \"temp\":%d.%d,\"volt\":%d.%d,\"up_time\":%ld,\"tot_req\":%d, \
206 \"leds\":{ \"0\":\"%d\", \"1\":\"%d\", \"2\":\"%d\"}}",
207 status.local_ip, status.last_connected_ip,
208 status.internal_temp / 10, status.internal_temp % 10,
209 volt / 1000, volt % 1000,
210 status.up_time, status.tot_req,
211 GET_LED_STATUS(status.led_status, 0),
212 GET_LED_STATUS(status.led_status, 1),
213 GET_LED_STATUS(status.led_status, 2));
215 http_sendOk(client, HTTP_CONTENT_JSON);
216 netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
220 static int cgi_logo(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
226 http_sendOk(client, HTTP_CONTENT_JPEG);
227 netconn_write(client, bertos_logo_jpg, bertos_logo_jpg_len, NETCONN_NOCOPY);
232 * Return the internal micro temperature string.
234 static int cgi_temp(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
240 sprintf((char *)tx_buf, "[%d.%d]", status.internal_temp / 10, status.internal_temp % 10);
242 http_sendOk(client, HTTP_CONTENT_JSON);
243 netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
249 * Return the board uptime.
251 static int cgi_uptime(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
259 uint32_t m = status.up_time / 60;
261 uint32_t s = status.up_time - (m * 60) - (h * 3600);
263 sprintf((char *)tx_buf, "[\"%ldh %ldm %lds\"]", h, m, s);
265 http_sendOk(client, HTTP_CONTENT_JSON);
266 netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
271 * Return the VR1 potentiometer voltage.
273 static int cgi_resistor(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
279 uint16_t volt = ADC_RANGECONV(adc_read(1), 0, 3300);
280 kprintf("volt %d\n", volt);
281 sprintf((char *)tx_buf, "[ \"%d.%dV\" ]", volt / 1000, volt % 1000);
283 http_sendOk(client, HTTP_CONTENT_JSON);
284 netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
289 #define CGI_LED_ID_KEY "n"
290 #define CGI_LED_CMD_KEY "set"
292 static char key_value[80];
295 * Reply to client the request string.
297 static int cgi_led(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
303 char *query_str = strstr(name, "?") + 1;
304 size_t query_str_len = strlen(query_str);
308 int len = http_tokenizeGetRequest(query_str, query_str_len);
310 LOG_INFO("Found %d key/value pair\n", len);
312 if (http_getValue(query_str, query_str_len, CGI_LED_ID_KEY, key_value, sizeof(key_value)) < 0)
314 LOG_ERR("key %s, not found\n", CGI_LED_ID_KEY);
318 LOG_INFO("Found key %s = %s\n", CGI_LED_ID_KEY, key_value);
319 led_id = atoi(key_value);
322 if (http_getValue(query_str, query_str_len, CGI_LED_CMD_KEY, key_value, sizeof(key_value)) < 0)
324 LOG_ERR("key %s, not found\n", CGI_LED_CMD_KEY);
328 LOG_INFO("Found key %s = %s\n", CGI_LED_CMD_KEY, key_value);
329 led_cmd = atoi(key_value);
334 SET_LED_STATUS(status.led_status, led_id);
339 CLEAR_LED_STATUS(status.led_status, led_id);
342 sprintf((char *)tx_buf, "{\"n\":%d, \"set\":,%d}", led_id, led_cmd);
344 http_sendOk(client, HTTP_CONTENT_JSON);
345 netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
349 http_sendInternalErr(client, HTTP_CONTENT_JSON);
353 static int cgi_ledStatus(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
359 sprintf((char *)tx_buf, "{ \"0\":\"%d\", \"1\":\"%d\", \"2\":\"%d\"}",
360 GET_LED_STATUS(status.led_status, 0),
361 GET_LED_STATUS(status.led_status, 1),
362 GET_LED_STATUS(status.led_status, 2));
364 http_sendOk(client, HTTP_CONTENT_JSON);
365 netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
370 * Reply to client the request string.
372 static int cgi_echo(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
376 http_sendOk(client, HTTP_CONTENT_PLAIN);
377 netconn_write(client, recv_buf, recv_len, NETCONN_COPY);
384 * Default function that http server call every client request, if it doesn't match a cgi table.
385 * In this implementation all client request are associate to real file stored on FAT file
386 * sistem on SD card. If the file there is not on SD card the server reply to client the
387 * error File not found, and send an harcoded page. In the same way, the server reply
388 * error page if the SD card is not present.
391 static int http_htmPageLoad(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
396 if (SD_CARD_PRESENT())
399 // SD fat filesystem context
405 bool sd_ok = sd_init(&sd, NULL, 0);
408 LOG_INFO("Mount FAT filesystem.\n");
409 result = f_mount(0, &fs);
412 LOG_ERR("Mounting FAT volumes error[%d]\n", result);
419 result = fatfile_open(&in_file, name, FA_OPEN_EXISTING | FA_READ);
424 LOG_INFO("Opened file '%s' size %ld\n", name, in_file.fat_file.fsize);
426 int type = http_searchContentType(name);
427 http_sendOk(client, type);
429 while (count < in_file.fat_file.fsize)
431 int len = kfile_read(&in_file.fd, tx_buf, sizeof(tx_buf));
432 netconn_write(client, tx_buf, len, NETCONN_COPY);
436 kfile_flush(&in_file.fd);
437 kfile_close(&in_file.fd);
439 LOG_INFO("Sent: %d\n", count);
443 LOG_ERR("Unable to open file: '%s' error[%d]\n", name, result);
444 http_sendFileNotFound(client, HTTP_CONTENT_HTML);
445 netconn_write(client, http_file_not_found, http_file_not_found_len - 1, NETCONN_NOCOPY);
450 LOG_INFO("Umount FAT filesystem.\n");
454 http_sendFileNotFound(client, HTTP_CONTENT_HTML);
455 netconn_write(client, http_sd_not_present, http_sd_not_present_len, NETCONN_NOCOPY);
462 * Return to client a string that display the CHIP ID information.
463 * See datasheet for more detail.
465 static int cgi_chipInfo(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
471 sprintf((char *)tx_buf, "{ \"core_name\":\"%s\", \"arch_name\":\"%s\", \"sram_size\":\"%s\",\"flash_size\":\"%s\", \"mem_boot_type\":\"%s\" }",
472 chipid_eproc_name(CHIPID_EPRCOC()),
473 chipid_archnames(CHIPID_ARCH()),
474 chipid_sramsize(CHIPID_SRAMSIZ()),
475 chipid_nvpsize(CHIPID_NVPSIZ()),
476 chipid_nvptype(CHIPID_NVTYP()));
478 http_sendOk(client, HTTP_CONTENT_JSON);
479 netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
485 static int cgi_error(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
496 * Static cgi table where we associate callback to page.
498 static HttpCGI cgi_table[] =
500 { CGI_MATCH_WORD, "echo", cgi_echo },
501 { CGI_MATCH_NAME, "get_temperature", cgi_temp },
502 { CGI_MATCH_NAME, "get_uptime", cgi_uptime },
503 { CGI_MATCH_NAME, "get_resistor", cgi_resistor },
504 { CGI_MATCH_NAME, "set_led", cgi_led },
505 { CGI_MATCH_NAME, "get_ledStatus", cgi_ledStatus },
506 { CGI_MATCH_NAME, "error", cgi_error },
507 { CGI_MATCH_WORD, "status", cgi_status },
508 { CGI_MATCH_NAME, "get_chipinfo", cgi_chipInfo },
509 { CGI_MATCH_NAME, "bertos_logo_jpg", cgi_logo },
510 { CGI_MATCH_NONE, NULL, NULL }
516 struct netconn *server;
518 /* Hardware initialization */
520 http_init(http_htmPageLoad, cgi_table);
522 proc_new(proc_displayRefresh, NULL, KERN_MINSTACKSIZE * 2, NULL);
525 while (!netif.ip_addr.addr)
526 timer_delay(DHCP_FINE_TIMER_MSECS);
527 kprintf("dhcp ok: ip = %d.%d.%d.%d\n", IP_ADDR_TO_INT_TUPLE(netif.ip_addr.addr));
529 server = netconn_new(NETCONN_TCP);
530 netconn_bind(server, IP_ADDR_ANY, 80);
531 netconn_listen(server);