ESP8266 part of the f105-motor-demo project (see f105-motor-demo_stm32)
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/*
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 <esp8266.h>
#include "cgi.h"
static long hitCounter = 0;
//Template code for the counter on the index page.
int ICACHE_FLASH_ATTR tplCounter(HttpdConnData *connData, char *token, void **arg)
{
char buff[128];
if (token == NULL) return HTTPD_CGI_DONE;
if (os_strcmp(token, "counter") == 0) {
hitCounter++;
os_sprintf(buff, "%ld", hitCounter);
}
httpdSend(connData, buff, -1);
return HTTPD_CGI_DONE;
}
typedef struct {
uint32_t count_remain;
} RandomNumberState;
//Template code for the counter on the index page.
int ICACHE_FLASH_ATTR tplMultipart(HttpdConnData *connData, char *token, void **arg)
{
if (token == NULL) {
if (*arg != NULL) {
free(*arg);
*arg = NULL; // mark as already freed
}
return HTTPD_CGI_DONE; // cleanup
}
if (os_strcmp(token, "numbers") == 0) {
RandomNumberState *rns = *arg;
char buff[20];
if (rns == NULL) {
//First call to this cgi. Open the file so we can read it.
rns=(RandomNumberState *)malloc(sizeof(RandomNumberState));
*arg=rns;
// parse count
uint32_t count = 1;
int len = httpdFindArg(connData->getArgs, "count", buff, sizeof(buff));
if (len==-1) {
// no such get arg
} else {
count = (uint32_t)atoi(buff);
}
rns->count_remain = count;
info("User wants %d numbers.", count);
}
for (int i = 0; i < 100; i++) {
os_sprintf(buff, "<li>%lu\n", os_random());
httpdSend(connData, buff, -1);
if (--rns->count_remain == 0) {
break;
}
}
if (rns->count_remain == 0) {
free(rns);
*arg = NULL; // mark as already freed
return HTTPD_CGI_DONE;
}
return HTTPD_CGI_MORE;
}
return HTTPD_CGI_DONE;
}
/*
// better to put it in the fs...
int FLASH_FN cgiRandomNumbers(HttpdConnData *connData) {
RandomNumberState *rns=connData->cgiData;
char buff[128];
if (connData->conn == NULL) {
//Connection aborted. Clean up.
if (rns != NULL) free(rns);
return HTTPD_CGI_DONE;
}
if (rns == NULL) {
//First call to this cgi. Open the file so we can read it.
rns=(RandomNumberState *)malloc(sizeof(RandomNumberState));
connData->cgiData=rns;
// parse count
uint32_t count = 1;
int len = httpdFindArg(connData->getArgs, "count", buff, sizeof(buff));
if (len==-1) {
// no such get arg
} else {
count = (uint32_t)atoi(buff);
}
rns->count_remain = count;
printf("User wants %d numbers.", count);
httpdStartResponse(connData, 200);
httpdHeader(connData, "Content-Type", "text/html");
httpdEndHeaders(connData);
// start the page
httpdSend(connData, "<!DOCTYPE html>"
"<html>"
"<head>"
" <title>Generated page.</title>"
" <link rel=\"stylesheet\" type=\"text/css\" href=\"style.css\">"
"</head>"
"<body>"
"<div id=\"main\">"
"<h1>Random numbers:</h1>"
"<ul>", -1);
return HTTPD_CGI_MORE;
}
// send end of the page
if (rns->count_remain == 0) {
httpdSend(connData, "</ul></body></html>", -1);
free(rns);
return HTTPD_CGI_DONE;
}
// print chunk of data
for (int i = 0; i < 100; i++) {
os_sprintf(buff, "<li>%lu\n", os_random());
httpdSend(connData, buff, -1);
if (--rns->count_remain == 0) {
break;
}
}
return HTTPD_CGI_MORE;
}
*/