ESPTerm - ESP8266 terminal emulator. Branches: [master] patches, [work] next release
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espterm-firmware/user/cgi.c

103 lines
2.8 KiB

/*
Some random cgi routines. Used in the LED example and the page that returns the entire
flash as a binary. Also handles the hit counter on the main page.
*/
/*
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* Jeroen Domburg <jeroen@spritesmods.com> wrote this file. As long as you retain
* this notice you can do whatever you want with this stuff. If we meet some day,
* and you think this stuff is worth it, you can buy me a beer in return.
* ----------------------------------------------------------------------------
*/
#include <string.h>
#include <osapi.h>
#include "user_interface.h"
#include "mem.h"
#include "httpd.h"
#include "cgi.h"
#include "io.h"
#include "espmissingincludes.h"
#include <ip_addr.h>
//cause I can't be bothered to write an ioGetLed()
static char currLedState=0;
//Cgi that turns the LED on or off according to the 'led' param in the POST data
int ICACHE_FLASH_ATTR cgiLed(HttpdConnData *connData) {
int len;
char buff[1024];
if (connData->conn==NULL) {
//Connection aborted. Clean up.
return HTTPD_CGI_DONE;
}
len=httpdFindArg(connData->postBuff, "led", buff, sizeof(buff));
if (len!=0) {
currLedState=atoi(buff);
ioLed(currLedState);
}
httpdRedirect(connData, "led.tpl");
return HTTPD_CGI_DONE;
}
//Template code for the led page.
void ICACHE_FLASH_ATTR tplLed(HttpdConnData *connData, char *token, void **arg) {
char buff[128];
if (token==NULL) return;
os_strcpy(buff, "Unknown");
if (os_strcmp(token, "ledstate")==0) {
if (currLedState) {
os_strcpy(buff, "on");
} else {
os_strcpy(buff, "off");
}
}
espconn_sent(connData->conn, (uint8 *)buff, os_strlen(buff));
}
static long hitCounter=0;
//Template code for the counter on the index page.
void ICACHE_FLASH_ATTR tplCounter(HttpdConnData *connData, char *token, void **arg) {
char buff[128];
if (token==NULL) return;
if (os_strcmp(token, "counter")==0) {
hitCounter++;
os_sprintf(buff, "%ld", hitCounter);
}
espconn_sent(connData->conn, (uint8 *)buff, os_strlen(buff));
}
//Cgi that reads the SPI flash. Assumes 512KByte flash.
int ICACHE_FLASH_ATTR cgiReadFlash(HttpdConnData *connData) {
int *pos=(int *)&connData->cgiData;
if (connData->conn==NULL) {
//Connection aborted. Clean up.
return HTTPD_CGI_DONE;
}
if (*pos==0) {
os_printf("Start flash download.\n");
httpdStartResponse(connData, 200);
httpdHeader(connData, "Content-Type", "application/bin");
httpdEndHeaders(connData);
*pos=0x40200000;
return HTTPD_CGI_MORE;
}
//Send 1K of flash per call. We will get called again if we haven't sent 512K yet.
espconn_sent(connData->conn, (uint8 *)(*pos), 1024);
*pos+=1024;
if (*pos>=0x40200000+(512*1024)) return HTTPD_CGI_DONE; else return HTTPD_CGI_MORE;
}