/* 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 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 #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; // 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, "" "" "" " Generated page." " " "" "" "

" "

Random numbers:

" "

", -1); return HTTPD_CGI_MORE; } // send end of the page if (rns->count_remain == 0) { httpdSend(connData, "", -1); free(rns); return HTTPD_CGI_DONE; } // print chunk of data for (int i = 0; i < 100; i++) { os_sprintf(buff, "

%lu\n", os_random()); httpdSend(connData, buff, -1); if (--rns->count_remain == 0) { break; } } return HTTPD_CGI_MORE; }