105 lines
2.3 KiB
C
105 lines
2.3 KiB
C
/*
|
|
* wifi_portal.c
|
|
*
|
|
* Created on: 09/04/2026
|
|
* Author: carec
|
|
*/
|
|
|
|
|
|
#include "wifi_portal.h"
|
|
#include "esp_at.h"
|
|
#include "http_pages.h"
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
static char saved_ssid[33];
|
|
static char saved_pass[65];
|
|
|
|
static void url_decode(char *dst, const char *src, int maxlen)
|
|
{
|
|
int i = 0;
|
|
while (*src && i < (maxlen - 1)) {
|
|
if (*src == '+') {
|
|
dst[i++] = ' ';
|
|
src++;
|
|
} else if (*src == '%' && src[1] && src[2]) {
|
|
char hex[3] = {src[1], src[2], 0};
|
|
dst[i++] = (char)strtol(hex, NULL, 16);
|
|
src += 3;
|
|
} else {
|
|
dst[i++] = *src++;
|
|
}
|
|
}
|
|
dst[i] = 0;
|
|
}
|
|
|
|
static int get_query_param(const char *req, const char *name, char *out, int outlen)
|
|
{
|
|
const char *q = strchr(req, '?');
|
|
if (!q) return 0;
|
|
|
|
char key[32];
|
|
snprintf(key, sizeof(key), "%s=", name);
|
|
|
|
const char *p = strstr(q, key);
|
|
if (!p) return 0;
|
|
|
|
p += strlen(key);
|
|
|
|
const char *end = strchr(p, '&');
|
|
int len = end ? (end - p) : strcspn(p, " ");
|
|
|
|
char tmp[128];
|
|
if (len >= (int)sizeof(tmp)) len = sizeof(tmp) - 1;
|
|
|
|
memcpy(tmp, p, len);
|
|
tmp[len] = 0;
|
|
|
|
url_decode(out, tmp, outlen);
|
|
return 1;
|
|
}
|
|
|
|
static void save_credentials(const char *ssid, const char *pass)
|
|
{
|
|
strncpy(saved_ssid, ssid, sizeof(saved_ssid) - 1);
|
|
strncpy(saved_pass, pass, sizeof(saved_pass) - 1);
|
|
|
|
// aqui metes EEPROM / FLASH / NVS emulador / o que quiseres
|
|
// por agora fica em RAM
|
|
}
|
|
|
|
void WIFI_PORTAL_Init(void)
|
|
{
|
|
saved_ssid[0] = 0;
|
|
saved_pass[0] = 0;
|
|
}
|
|
|
|
void WIFI_PORTAL_HandleHttp(int link_id, const char *req)
|
|
{
|
|
if (strncmp(req, "GET / ", 6) == 0) {
|
|
ESP_SendLinkData(link_id, HTTP_Page_Index());
|
|
ESP_CloseLink(link_id);
|
|
return;
|
|
}
|
|
|
|
if (strncmp(req, "GET /save?", 10) == 0) {
|
|
char ssid[33] = {0};
|
|
char pass[65] = {0};
|
|
|
|
get_query_param(req, "ssid", ssid, sizeof(ssid));
|
|
get_query_param(req, "pass", pass, sizeof(pass));
|
|
|
|
if (ssid[0]) {
|
|
save_credentials(ssid, pass);
|
|
}
|
|
|
|
ESP_SendLinkData(link_id, HTTP_Page_Saved());
|
|
ESP_CloseLink(link_id);
|
|
return;
|
|
}
|
|
|
|
ESP_SendLinkData(link_id, HTTP_Page_404());
|
|
ESP_CloseLink(link_id);
|
|
}
|