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/*
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Some random cgi routines. Used in the LED example and the page that returns the entire
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flash as a binary. Also handles the hit counter on the main page.
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*/
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/*
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* ----------------------------------------------------------------------------
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* "THE BEER-WARE LICENSE" (Revision 42):
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* Jeroen Domburg <jeroen@spritesmods.com> wrote this file. As long as you retain
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* this notice you can do whatever you want with this stuff. If we meet some day,
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* and you think this stuff is worth it, you can buy me a beer in return.
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* ----------------------------------------------------------------------------
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*/
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#include <esp8266.h>
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#include "cgi.h"
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static long hitCounter = 0;
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//Template code for the counter on the index page.
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int ICACHE_FLASH_ATTR tplCounter(HttpdConnData *connData, char *token, void **arg)
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{
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char buff[128];
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if (token == NULL) return HTTPD_CGI_DONE;
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if (os_strcmp(token, "counter") == 0) {
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hitCounter++;
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os_sprintf(buff, "%ld", hitCounter);
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}
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httpdSend(connData, buff, -1);
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return HTTPD_CGI_DONE;
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}
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typedef struct {
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uint32_t count_remain;
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} RandomNumberState;
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//Template code for the counter on the index page.
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int ICACHE_FLASH_ATTR tplMultipart(HttpdConnData *connData, char *token, void **arg)
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{
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if (token == NULL) {
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if (*arg != NULL) {
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free(*arg);
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*arg = NULL; // mark as already freed
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}
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return HTTPD_CGI_DONE; // cleanup
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}
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if (os_strcmp(token, "numbers") == 0) {
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RandomNumberState *rns = *arg;
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char buff[20];
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if (rns == NULL) {
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//First call to this cgi. Open the file so we can read it.
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rns=(RandomNumberState *)malloc(sizeof(RandomNumberState));
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*arg=rns;
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// parse count
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uint32_t count = 1;
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int len = httpdFindArg(connData->getArgs, "count", buff, sizeof(buff));
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if (len==-1) {
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// no such get arg
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} else {
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count = (uint32_t)atoi(buff);
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}
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rns->count_remain = count;
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info("User wants %d numbers.", count);
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}
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for (int i = 0; i < 100; i++) {
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os_sprintf(buff, "<li>%lu\n", os_random());
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httpdSend(connData, buff, -1);
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if (--rns->count_remain == 0) {
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break;
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}
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}
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if (rns->count_remain == 0) {
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free(rns);
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*arg = NULL; // mark as already freed
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return HTTPD_CGI_DONE;
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}
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return HTTPD_CGI_MORE;
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}
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return HTTPD_CGI_DONE;
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}
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/*
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// better to put it in the fs...
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int FLASH_FN cgiRandomNumbers(HttpdConnData *connData) {
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RandomNumberState *rns=connData->cgiData;
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char buff[128];
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if (connData->conn == NULL) {
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//Connection aborted. Clean up.
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if (rns != NULL) free(rns);
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return HTTPD_CGI_DONE;
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}
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if (rns == NULL) {
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//First call to this cgi. Open the file so we can read it.
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rns=(RandomNumberState *)malloc(sizeof(RandomNumberState));
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connData->cgiData=rns;
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// parse count
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uint32_t count = 1;
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int len = httpdFindArg(connData->getArgs, "count", buff, sizeof(buff));
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if (len==-1) {
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// no such get arg
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} else {
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count = (uint32_t)atoi(buff);
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}
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rns->count_remain = count;
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printf("User wants %d numbers.", count);
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httpdStartResponse(connData, 200);
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httpdHeader(connData, "Content-Type", "text/html");
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httpdEndHeaders(connData);
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// start the page
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httpdSend(connData, "<!DOCTYPE html>"
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"<html>"
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"<head>"
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" <title>Generated page.</title>"
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" <link rel=\"stylesheet\" type=\"text/css\" href=\"style.css\">"
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"</head>"
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"<body>"
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"<div id=\"main\">"
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"<h1>Random numbers:</h1>"
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"<ul>", -1);
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return HTTPD_CGI_MORE;
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}
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// send end of the page
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if (rns->count_remain == 0) {
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httpdSend(connData, "</ul></body></html>", -1);
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free(rns);
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return HTTPD_CGI_DONE;
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}
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// print chunk of data
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for (int i = 0; i < 100; i++) {
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os_sprintf(buff, "<li>%lu\n", os_random());
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httpdSend(connData, buff, -1);
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if (--rns->count_remain == 0) {
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break;
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}
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}
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return HTTPD_CGI_MORE;
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}
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*/
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