You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 
esp-link/user/cgi.c

98 lines
2.7 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 <esp8266.h>
#include "cgi.h"
#include "io.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->post->buff, "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.
int ICACHE_FLASH_ATTR tplLed(HttpdConnData *connData, char *token, void **arg) {
char buff[128];
if (token==NULL) return HTTPD_CGI_DONE;
os_strcpy(buff, "Unknown");
if (os_strcmp(token, "ledstate")==0) {
if (currLedState) {
os_strcpy(buff, "on");
} else {
os_strcpy(buff, "off");
}
} else if (os_strcmp(token, "topnav")==0) {
printNav(buff);
}
httpdSend(connData, buff, -1);
return HTTPD_CGI_DONE;
}
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[256];
if (token==NULL) return HTTPD_CGI_DONE;
if (os_strcmp(token, "topnav")==0) {
printNav(buff);
} else if (os_strcmp(token, "counter")==0) {
hitCounter++;
os_sprintf(buff, "%ld", hitCounter);
}
httpdSend(connData, buff, -1);
return HTTPD_CGI_DONE;
}
static char *navLinks[][2] = {
{ "Home", "/index.tpl" }, { "Wifi", "/wifi/wifi.tpl" }, { "Serial", "/index.tpl" },
{ "Esp log", "/console.tpl" }, { "Help", "/help.tpl" },
{ 0, 0 },
};
// Print the navigation links into the buffer and return the length of what got added
int ICACHE_FLASH_ATTR printNav(char *buff) {
int len = 0;
for (uint8_t i=0; navLinks[i][0] != NULL; i++) {
if (i > 0) buff[len++] = '|';
//os_printf("nav %d: %s -> %s\n", i, navLinks[i][0], navLinks[i][1]);
len += os_sprintf(buff+len, " <a href=\"%s\">%s</a> ", navLinks[i][1], navLinks[i][0]);
}
//os_printf("nav: %s\n", buff);
return len;
}