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