rasmus/MTGcompanion
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MTGcompanion/main/web_server.c
Rasmus c272776d47
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2026-09-12 14:35:09 +02:00

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/*
* MTG RFID Companion - Registration web server (SoftAP)
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "esp_log.h"
#include "esp_wifi.h"
#include "esp_netif.h"
#include "esp_http_server.h"
#include "cJSON.h"
#include "rfid_manager.h"
#include "storage_manager.h"
#include "scryfall_client.h"
#include "wifi_manager.h"
#include "dns_server.h"
#include "web_server.h"
static const char *TAG = "web";
#define AP_SSID "MTG-Companion"
#define AP_PASS ""
#define HTTPD_BODY_MAX (2048)
static const char SPA_PAGE[] =
"<!DOCTYPE html><html><head><meta charset=\"utf-8\">"
"<meta name=\"viewport\" content=\"width=device-width,initial-scale=1\">"
"<title>MTG RFID Companion</title><style>"
"body{font-family:system-ui,-apple-system,sans-serif;background:#141424;color:#eee;max-width:600px;margin:1.5em auto;padding:1em}"
"h1{color:#ffd75a;margin-bottom:0.2em}h2{color:#ffd75a;font-size:1.15em;margin-top:1.2em}"
".uid{font-size:1.5em;font-family:monospace;letter-spacing:2px;color:#7fd77f;word-break:break-all;background:#1e1e32;padding:.4em .6em;border-radius:6px;border:1px solid #333}"
"input,select{font-size:1em;padding:.5em .8em;border-radius:6px;border:1px solid #555;background:#222;color:#eee;width:100%;box-sizing:border-box}"
"button,.btn{font-size:.95em;padding:.5em 1em;border-radius:6px;border:1px solid #555;background:#2a2a44;color:#eee;cursor:pointer;margin:.3em 0}"
"button:hover,.btn:hover{background:#3a3a5c}"
".btn-primary{background:#ffd75a;color:#111;border:none;font-weight:bold}"
".btn-primary:hover{background:#ffe380}"
".btn-del{background:#4a1e1e;color:#ff9999;border:1px solid #772222;font-size:.85em;padding:.4em .8em;cursor:pointer;border-radius:6px}"
".btn-del:hover{background:#772222;color:#fff}"
".tabs{display:flex;gap:8px;margin-bottom:1.5em}"
".tab-btn{flex:1;font-size:1em;padding:.6em;border-radius:8px;background:#1e1e32;color:#aaa;border:1px solid #33334c;cursor:pointer;font-weight:600;text-align:center}"
".tab-btn.active{background:#ffd75a;color:#111;border-color:#ffd75a}"
".tab-pane{display:none}"
".tab-pane.active{display:block}"
".status-badge{display:inline-block;padding:.3em .7em;border-radius:12px;font-size:.85em;font-weight:bold;margin-bottom:.8em}"
".badge-ok{background:#1b4332;color:#7fd77f;border:1px solid #2d6a4f}"
".badge-bad{background:#4a1e1e;color:#ff9999;border:1px solid #772222}"
".input-grp{margin-bottom:1em}"
".input-grp label{display:block;color:#ccc;font-size:.85em;margin-bottom:.3em}"
".pwd-row{display:flex;gap:6px}"
".pwd-row input{flex:1}"
".sug{list-style:none;padding:0;margin:.4em 0;background:#1f1f33;border-radius:6px;border:1px solid #333}"
".sug li{cursor:pointer;padding:.5em .8em;border-bottom:1px solid #333}"
".sug li:hover{background:#2a2a48;color:#ffd75a}"
".ok{color:#7fd77f}.bad{color:#ff6b6b}"
".card-item{display:flex;align-items:center;gap:12px;background:#1e1e32;border:1px solid #33334c;border-radius:8px;padding:8px 12px;margin-bottom:8px}"
".card-thumb{width:52px;height:52px;object-fit:cover;border-radius:6px;border:1px solid #444;background:#111;flex-shrink:0}"
".card-info{flex:1;min-width:0}"
".card-title{font-weight:bold;color:#ffd75a;font-size:1.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}"
".card-uid{font-family:monospace;color:#7fd77f;font-size:.85em;margin-top:2px}"
".card-none{color:#777;font-style:italic;padding:.8em 0}"
".header-row{display:flex;align-items:center;justify-content:space-between}"
"</style></head><body>"
"<h1>MTG RFID Companion</h1>"
"<p style=\"color:#aaa;margin-top:0\">Manage card tags, decks, and device Wi-Fi connectivity.</p>"
"<div class=\"tabs\">"
"<button id=\"tb-cards\" class=\"tab-btn active\" onclick=\"tab('cards')\">&#127183; Card Pairing</button>"
"<button id=\"tb-wifi\" class=\"tab-btn\" onclick=\"tab('wifi')\">&#128246; Wi-Fi Settings</button>"
"</div>"
"<!-- Tab: Cards -->"
"<div id=\"pane-cards\" class=\"tab-pane active\">"
"<div style=\"background:#1a1a2e;padding:1em;border-radius:8px;border:1px solid #2d2d48;margin-bottom:1.5em\">"
"<h2 style=\"margin-top:0\">Last Scanned Tag</h2>"
"<p class=\"uid\" id=\"uid\">waiting...</p>"
"<h2>Pair With Card Name</h2>"
"<input id=\"name\" placeholder=\"Type card name (e.g. Black Lotus)\" autocomplete=\"off\">"
"<div style=\"margin-top:.6em\"><button class=\"btn-primary\" onclick=\"bindCard()\">Pair Card</button></div>"
"<ul class=\"sug\" id=\"res\"></ul>"
"<p id=\"status\"></p>"
"</div>"
"<div class=\"header-row\">"
"<h2>Paired Cards (<span id=\"count\">0</span>)</h2>"
"<button class=\"btn\" style=\"font-size:.8em\" onclick=\"loadCards()\">Refresh</button>"
"</div>"
"<div id=\"cards-box\"><p class=\"card-none\">Loading paired cards...</p></div>"
"</div>"
"<!-- Tab: Wi-Fi -->"
"<div id=\"pane-wifi\" class=\"tab-pane\">"
"<div style=\"background:#1a1a2e;padding:1em;border-radius:8px;border:1px solid #2d2d48;margin-bottom:1.5em\">"
"<h2 style=\"margin-top:0\">Active Connection</h2>"
"<div id=\"wf-badge\" class=\"status-badge badge-bad\">Checking Wi-Fi...</div>"
"<div id=\"wf-info\" style=\"font-size:.9em;color:#aaa;line-height:1.6\"></div>"
"</div>"
"<div style=\"background:#1a1a2e;padding:1em;border-radius:8px;border:1px solid #2d2d48;margin-bottom:1.5em\">"
"<div class=\"header-row\">"
"<h2 style=\"margin-top:0\">Connect to Wi-Fi</h2>"
"<button class=\"btn\" style=\"font-size:.8em\" id=\"wf-scan-btn\" onclick=\"scanWifi()\">&#128269; Scan Networks</button>"
"</div>"
"<div class=\"input-grp\">"
"<label>Discovered Networks</label>"
"<select id=\"wf-select\" onchange=\"pickNet()\">"
"<option value=\"\">-- Click Scan Networks above --</option>"
"</select>"
"</div>"
"<div class=\"input-grp\">"
"<label>Network Name (SSID)</label>"
"<input id=\"wf-ssid\" placeholder=\"e.g. MyHomeWifi or Mobile Hotspot\">"
"</div>"
"<div class=\"input-grp\">"
"<label>Password</label>"
"<div class=\"pwd-row\">"
"<input type=\"password\" id=\"wf-pass\" placeholder=\"Network password (empty if open)\">"
"<button type=\"button\" class=\"btn\" onclick=\"togglePass()\" style=\"margin:0;width:auto\">&#128065;</button>"
"</div>"
"</div>"
"<div style=\"margin-top:.6em\">"
"<button class=\"btn-primary\" style=\"width:100%\" onclick=\"connectWifi()\">Connect &amp; Save</button>"
"</div>"
"<p id=\"wf-status\" style=\"margin-top:.6em\"></p>"
"</div>"
"<div class=\"header-row\">"
"<h2>Saved Networks</h2>"
"<button class=\"btn\" style=\"font-size:.8em\" onclick=\"loadSavedWifi()\">Refresh</button>"
"</div>"
"<div id=\"saved-box\"><p class=\"card-none\">Loading saved networks...</p></div>"
"</div>"
"<script>"
"function tab(t){"
"document.getElementById('tb-cards').className='tab-btn'+(t==='cards'?' active':'');"
"document.getElementById('tb-wifi').className='tab-btn'+(t==='wifi'?' active':'');"
"document.getElementById('pane-cards').className='tab-pane'+(t==='cards'?' active':'');"
"document.getElementById('pane-wifi').className='tab-pane'+(t==='wifi'?' active':'');"
"if(t==='wifi'){refreshWifiStatus();loadSavedWifi();}"
"}"
"var lastUid='';var suggestions=[];"
"function esc(s){return s.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');}"
"function show(cls,msg){document.getElementById('status').className=cls;document.getElementById('status').textContent=msg;}"
"function poll(){fetch('/api/last_uid').then(function(r){return r.json();}).then(function(j){"
" if(j.uid&&j.uid!==lastUid){lastUid=j.uid;document.getElementById('uid').textContent=j.uid;"
" suggestions=[];document.getElementById('res').innerHTML='';show('','');}"
"}).catch(function(){});setTimeout(poll,1000);}"
"function autocomplete(){var q=document.getElementById('name').value;"
" if(q.length<3){suggestions=[];document.getElementById('res').innerHTML='';return;}"
" fetch('https://api.scryfall.com/cards/autocomplete?q='+encodeURIComponent(q))"
" .then(function(r){return r.json();}).then(function(j){"
" suggestions=(j.data||[]).slice(0,8);var h='';"
" suggestions.forEach(function(n,i){h+='<li onclick=\"pick('+i+')\">'+esc(n)+'</li>';});"
" document.getElementById('res').innerHTML=h;}).catch(function(){});}"
"function pick(i){document.getElementById('name').value=suggestions[i];document.getElementById('res').innerHTML='';}"
"document.getElementById('name').oninput=autocomplete;"
"function bindCard(){var n=document.getElementById('name').value.trim();"
" if(!lastUid||!n){show('bad','Scan a card and enter a name first');return;}"
" show('','Pairing...');"
" fetch('/api/bind',{method:'POST',headers:{'Content-Type':'application/x-www-form-urlencoded'},"
" body:'uid='+encodeURIComponent(lastUid)+'&name='+encodeURIComponent(n)})"
" .then(function(r){return r.json();}).then(function(j){"
" if(j.ok){show('ok','Paired '+j.uid+' -> '+j.name);document.getElementById('name').value='';"
" document.getElementById('res').innerHTML='';loadCards();}"
" else{show('bad','Error: '+j.error);}}).catch(function(e){show('bad','Network: '+e);});}"
"function unbindCard(u){if(!confirm('Unbind card '+u+'?'))return;"
" fetch('/api/unbind',{method:'POST',headers:{'Content-Type':'application/x-www-form-urlencoded'},"
" body:'uid='+encodeURIComponent(u)})"
" .then(function(r){return r.json();}).then(function(j){"
" if(j.ok){loadCards();show('ok','Unbound '+u);}"
" else{show('bad','Error unbinding '+u);}}).catch(function(e){show('bad','Network: '+e);});}"
"function loadCards(){"
" fetch('/api/cards').then(function(r){return r.json();}).then(function(data){"
" var box=document.getElementById('cards-box');var uids=Object.keys(data);"
" document.getElementById('count').textContent=uids.length;"
" if(uids.length===0){box.innerHTML='<p class=\"card-none\">No cards paired yet. Scan a card above to begin!</p>';return;}"
" uids.sort(function(a,b){return data[a].localeCompare(data[b]);});"
" var html='';"
" uids.forEach(function(u){"
" var nm=esc(data[u]);"
" html+='<div class=\"card-item\">';"
" html+='<img class=\"card-thumb\" src=\"/api/art?uid='+u+'\" alt=\"art\" onerror=\"this.style.display=\\'none\\'\">';"
" html+='<div class=\"card-info\"><div class=\"card-title\">'+nm+'</div><div class=\"card-uid\">'+u+'</div></div>';"
" html+='<button class=\"btn-del\" onclick=\"unbindCard(\\''+u+'\\')\">Unbind</button>';"
" html+='</div>';"
" });"
" box.innerHTML=html;"
" }).catch(function(e){document.getElementById('cards-box').innerHTML='<p class=\"bad\">Failed to load cards: '+e+'</p>';});"
"}"
"function showWf(cls,msg){var el=document.getElementById('wf-status');el.className=cls;el.textContent=msg;}"
"function togglePass(){var f=document.getElementById('wf-pass');f.type=f.type==='password'?'text':'password';}"
"function refreshWifiStatus(){"
" fetch('/api/wifi/status').then(function(r){return r.json();}).then(function(j){"
" var b=document.getElementById('wf-badge');var d=document.getElementById('wf-info');"
" if(j.connected){"
" b.className='status-badge badge-ok';b.textContent='Connected to '+j.ssid;"
" d.innerHTML='IP Address: <strong>'+j.ip+'</strong><br>Signal: '+j.rssi+' dBm<br>Hotspot Portal: 192.168.4.1';"
" }else{"
" b.className='status-badge badge-bad';b.textContent='Disconnected';"
" d.innerHTML='Device Wi-Fi is not connected to any network.<br>Hotspot Portal: <strong>192.168.4.1</strong>';"
" }"
" }).catch(function(){});"
"}"
"function scanWifi(){"
" var btn=document.getElementById('wf-scan-btn');"
" btn.disabled=true;btn.textContent='Scanning...';"
" var sel=document.getElementById('wf-select');"
" sel.innerHTML='<option>Scanning in progress...</option>';"
" fetch('/api/wifi/scan').then(function(r){return r.json();}).then(function(list){"
" btn.disabled=false;btn.textContent='🔍 Scan Networks';"
" if(!list||list.length===0){"
" sel.innerHTML='<option value=\"\">No networks found</option>';return;"
" }"
" var h='<option value=\"\">-- Select a discovered network --</option>';"
" list.forEach(function(ap){"
" var lock=ap.auth==='Open'?'':' 🔒';"
" h+='<option value=\"'+esc(ap.ssid)+'\">'+esc(ap.ssid)+' ('+ap.rssi+' dBm, '+ap.auth+lock+')</option>';"
" });"
" sel.innerHTML=h;"
" }).catch(function(e){"
" btn.disabled=false;btn.textContent='🔍 Scan Networks';"
" sel.innerHTML='<option value=\"\">Scan failed: '+e+'</option>';"
" });"
"}"
"function pickNet(){"
" var val=document.getElementById('wf-select').value;"
" if(val){"
" document.getElementById('wf-ssid').value=val;"
" document.getElementById('wf-pass').focus();"
" }"
"}"
"function connectWifi(){"
" var s=document.getElementById('wf-ssid').value.trim();"
" var p=document.getElementById('wf-pass').value;"
" if(!s){showWf('bad','Please enter or select a network SSID');return;}"
" showWf('','Connecting to '+s+'... Please wait 5-10s.');"
" fetch('/api/wifi/connect',{method:'POST',headers:{'Content-Type':'application/x-www-form-urlencoded'},"
" body:'ssid='+encodeURIComponent(s)+'&pass='+encodeURIComponent(p)})"
" .then(function(r){return r.json();}).then(function(j){"
" if(j.ok){"
" showWf('ok','Saved & initiated connection to '+s+'. Checking status...');"
" loadSavedWifi();"
" setTimeout(function(){refreshWifiStatus();showWf('ok','Connected profile saved!');},6000);"
" }else{"
" showWf('bad','Failed to connect: '+(j.error||'unknown'));"
" }"
" }).catch(function(e){showWf('bad','Network error: '+e);});"
"}"
"function loadSavedWifi(){"
" fetch('/api/wifi/saved').then(function(r){return r.json();}).then(function(list){"
" var box=document.getElementById('saved-box');"
" if(!list||list.length===0){"
" box.innerHTML='<p class=\"card-none\">No saved networks. Connect to a network above.</p>';return;"
" }"
" var h='';"
" list.forEach(function(item){"
" h+='<div class=\"card-item\">';"
" h+='<div class=\"card-info\"><div class=\"card-title\">'+esc(item.ssid)+'</div><div class=\"card-uid\">Saved Profile</div></div>';"
" h+='<button class=\"btn-del\" onclick=\"forgetWifi(\\''+esc(item.ssid)+'\\')\">Forget</button>';"
" h+='</div>';"
" });"
" box.innerHTML=h;"
" }).catch(function(e){"
" document.getElementById('saved-box').innerHTML='<p class=\"bad\">Error loading saved networks: '+e+'</p>';"
" });"
"}"
"function forgetWifi(s){"
" if(!confirm('Forget network \"'+s+'\"?'))return;"
" fetch('/api/wifi/forget',{method:'POST',headers:{'Content-Type':'application/x-www-form-urlencoded'},"
" body:'ssid='+encodeURIComponent(s)})"
" .then(function(r){return r.json();}).then(function(j){"
" if(j.ok){loadSavedWifi();refreshWifiStatus();}"
" else{alert('Failed to forget '+s);}"
" }).catch(function(e){alert('Error: '+e);});"
"}"
"poll();loadCards();refreshWifiStatus();"
"</script></body></html>";
static httpd_handle_t s_server = NULL;
static esp_err_t handle_root(httpd_req_t *req);
static esp_err_t handle_last_uid(httpd_req_t *req);
static esp_err_t handle_bind(httpd_req_t *req);
static esp_err_t handle_cards(httpd_req_t *req);
static esp_err_t handle_art(httpd_req_t *req);
static esp_err_t handle_unbind(httpd_req_t *req);
static esp_err_t handle_captive_portal(httpd_req_t *req);
static esp_err_t handle_wifi_status(httpd_req_t *req);
static esp_err_t handle_wifi_scan(httpd_req_t *req);
static esp_err_t handle_wifi_saved(httpd_req_t *req);
static esp_err_t handle_wifi_connect(httpd_req_t *req);
static esp_err_t handle_wifi_forget(httpd_req_t *req);
static const httpd_uri_t URI_ROOT = {
.uri = "/", .method = HTTP_GET, .handler = handle_root, .user_ctx = NULL
};
static const httpd_uri_t URI_LAST_UID = {
.uri = "/api/last_uid", .method = HTTP_GET, .handler = handle_last_uid, .user_ctx = NULL
};
static const httpd_uri_t URI_BIND = {
.uri = "/api/bind", .method = HTTP_POST, .handler = handle_bind, .user_ctx = NULL
};
static const httpd_uri_t URI_CARDS = {
.uri = "/api/cards", .method = HTTP_GET, .handler = handle_cards, .user_ctx = NULL
};
static const httpd_uri_t URI_ART = {
.uri = "/api/art", .method = HTTP_GET, .handler = handle_art, .user_ctx = NULL
};
static const httpd_uri_t URI_UNBIND = {
.uri = "/api/unbind", .method = HTTP_POST, .handler = handle_unbind, .user_ctx = NULL
};
/* Wi-Fi Management URIs */
static const httpd_uri_t URI_WIFI_STATUS = {
.uri = "/api/wifi/status", .method = HTTP_GET, .handler = handle_wifi_status, .user_ctx = NULL
};
static const httpd_uri_t URI_WIFI_SCAN = {
.uri = "/api/wifi/scan", .method = HTTP_GET, .handler = handle_wifi_scan, .user_ctx = NULL
};
static const httpd_uri_t URI_WIFI_SAVED = {
.uri = "/api/wifi/saved", .method = HTTP_GET, .handler = handle_wifi_saved, .user_ctx = NULL
};
static const httpd_uri_t URI_WIFI_CONNECT = {
.uri = "/api/wifi/connect", .method = HTTP_POST, .handler = handle_wifi_connect, .user_ctx = NULL
};
static const httpd_uri_t URI_WIFI_FORGET = {
.uri = "/api/wifi/forget", .method = HTTP_POST, .handler = handle_wifi_forget, .user_ctx = NULL
};
/* Captive Portal Probe URIs */
static const httpd_uri_t URI_CP_APPLE = {
.uri = "/hotspot-detect.html", .method = HTTP_GET, .handler = handle_captive_portal, .user_ctx = NULL
};
static const httpd_uri_t URI_CP_204_1 = {
.uri = "/generate_204", .method = HTTP_GET, .handler = handle_captive_portal, .user_ctx = NULL
};
static const httpd_uri_t URI_CP_204_2 = {
.uri = "/gen_204", .method = HTTP_GET, .handler = handle_captive_portal, .user_ctx = NULL
};
static const httpd_uri_t URI_CP_WIN_1 = {
.uri = "/connecttest.txt", .method = HTTP_GET, .handler = handle_captive_portal, .user_ctx = NULL
};
static const httpd_uri_t URI_CP_WIN_2 = {
.uri = "/ncsi.txt", .method = HTTP_GET, .handler = handle_captive_portal, .user_ctx = NULL
};
static const httpd_uri_t URI_CP_FF_1 = {
.uri = "/canonical.html", .method = HTTP_GET, .handler = handle_captive_portal, .user_ctx = NULL
};
static const httpd_uri_t URI_CP_FF_2 = {
.uri = "/success.txt", .method = HTTP_GET, .handler = handle_captive_portal, .user_ctx = NULL
};
static void send_json(httpd_req_t *req, int status, const char *body)
{
httpd_resp_set_status(req, status == 200 ? "200 OK" : "400 Bad Request");
httpd_resp_set_type(req, "application/json");
httpd_resp_send(req, body, -1);
}
static char *url_decode(const char *src)
{
if (!src) return NULL;
char *out = strdup(src);
if (!out) return NULL;
char *dst = out;
for (const char *s = src; *s; s++) {
if (*s == '%' && s[1] && s[2]) {
char hex[3] = { s[1], s[2], '\0' };
*dst++ = (char)strtol(hex, NULL, 16);
s += 2;
} else if (*s == '+') {
*dst++ = ' ';
} else {
*dst++ = *s;
}
}
*dst = '\0';
return out;
}
static char *get_form_param(const char *form, const char *key)
{
if (!form || !key) return NULL;
size_t klen = strlen(key);
const char *p = form;
while (p && *p) {
if (strncmp(p, key, klen) == 0 && p[klen] == '=') {
const char *val_start = p + klen + 1;
const char *val_end = strchr(val_start, '&');
size_t vlen = val_end ? (size_t)(val_end - val_start) : strlen(val_start);
char *raw = malloc(vlen + 1);
if (!raw) return NULL;
memcpy(raw, val_start, vlen);
raw[vlen] = '\0';
char *dec = url_decode(raw);
free(raw);
return dec;
}
p = strchr(p, '&');
if (p) p++;
}
return NULL;
}
/* ------------------------------------------------------------------ */
/* Endpoints */
/* ------------------------------------------------------------------ */
static esp_err_t handle_root(httpd_req_t *req)
{
httpd_resp_set_type(req, "text/html");
httpd_resp_send(req, SPA_PAGE, (int)sizeof(SPA_PAGE) - 1);
return ESP_OK;
}
static esp_err_t handle_last_uid(httpd_req_t *req)
{
char buf[80];
const char *uid = rfid_manager_last_uid();
if (uid == NULL || strlen(uid) == 0) {
snprintf(buf, sizeof(buf), "{\"uid\":\"\"}\n");
} else {
snprintf(buf, sizeof(buf), "{\"uid\":\"%s\"}\n", uid);
}
send_json(req, 200, buf);
return ESP_OK;
}
static esp_err_t handle_bind(httpd_req_t *req)
{
if (req->content_len <= 0 || req->content_len >= HTTPD_BODY_MAX) {
send_json(req, 400, "{\"ok\":false,\"error\":\"bad body\"}");
return ESP_OK;
}
char *form = malloc((size_t)req->content_len + 1);
if (form == NULL) {
send_json(req, 500, "{\"ok\":false,\"error\":\"no mem\"}");
return ESP_OK;
}
int got = httpd_req_recv(req, form, (size_t)req->content_len);
if (got != req->content_len) {
free(form);
send_json(req, 400, "{\"ok\":false,\"error\":\"short body\"}");
return ESP_OK;
}
form[got] = '\0';
char *uid = get_form_param(form, "uid");
char *name = get_form_param(form, "name");
free(form);
if (uid) {
size_t ulen = strlen(uid);
while (ulen > 0 && (uid[ulen - 1] == ' ' || uid[ulen - 1] == '\r' || uid[ulen - 1] == '\n')) {
uid[--ulen] = '\0';
}
}
if (uid == NULL || name == NULL || strlen(uid) == 0 || strlen(name) == 0) {
free(uid);
free(name);
send_json(req, 400, "{\"ok\":false,\"error\":\"missing uid or name\"}");
return ESP_OK;
}
esp_err_t ret = storage_manager_bind_uid(uid, name);
if (ret != ESP_OK) {
free(uid);
free(name);
send_json(req, 400, "{\"ok\":false,\"error\":\"persist failed\"}");
return ESP_OK;
}
scryfall_fetch_request(name, uid);
char ok[192];
snprintf(ok, sizeof(ok), "{\"ok\":true,\"uid\":\"%s\",\"name\":\"%s\"}\n", uid, name);
ESP_LOGI(TAG, "paired UID %s -> %s", uid, name);
send_json(req, 200, ok);
free(uid);
free(name);
return ESP_OK;
}
static esp_err_t handle_cards(httpd_req_t *req)
{
char *text = NULL;
size_t len = 0;
if (storage_read_text(STORAGE_MAPPINGS, &text, &len) == ESP_OK && text != NULL) {
httpd_resp_set_type(req, "application/json");
httpd_resp_send(req, text, (ssize_t)len);
free(text);
} else {
send_json(req, 200, "{}\n");
}
return ESP_OK;
}
static esp_err_t handle_art(httpd_req_t *req)
{
char query[64] = {0};
char uid[32] = {0};
if (httpd_req_get_url_query_str(req, query, sizeof(query)) == ESP_OK) {
httpd_query_key_value(query, "uid", uid, sizeof(uid));
}
if (uid[0] == '\0') {
httpd_resp_send_err(req, HTTPD_400_BAD_REQUEST, "Missing uid");
return ESP_OK;
}
char path[64];
snprintf(path, sizeof(path), STORAGE_CARDS_DIR "/%s.jpg", uid);
FILE *f = fopen(path, "rb");
if (!f) {
httpd_resp_send_err(req, HTTPD_404_NOT_FOUND, "Art not found");
return ESP_OK;
}
httpd_resp_set_type(req, "image/jpeg");
httpd_resp_set_hdr(req, "Cache-Control", "public, max-age=86400");
char chunk[1024];
size_t n = 0;
while ((n = fread(chunk, 1, sizeof(chunk), f)) > 0) {
if (httpd_resp_send_chunk(req, chunk, (ssize_t)n) != ESP_OK) {
fclose(f);
return ESP_FAIL;
}
}
fclose(f);
httpd_resp_send_chunk(req, NULL, 0);
return ESP_OK;
}
static esp_err_t handle_unbind(httpd_req_t *req)
{
if (req->content_len <= 0 || req->content_len >= HTTPD_BODY_MAX) {
send_json(req, 400, "{\"ok\":false,\"error\":\"bad body\"}");
return ESP_OK;
}
char *form = malloc((size_t)req->content_len + 1);
if (form == NULL) {
send_json(req, 500, "{\"ok\":false,\"error\":\"no mem\"}");
return ESP_OK;
}
int got = httpd_req_recv(req, form, (size_t)req->content_len);
if (got != req->content_len) {
free(form);
send_json(req, 400, "{\"ok\":false,\"error\":\"short body\"}");
return ESP_OK;
}
form[got] = '\0';
char *uid = get_form_param(form, "uid");
free(form);
if (uid) {
size_t ulen = strlen(uid);
while (ulen > 0 && (uid[ulen - 1] == ' ' || uid[ulen - 1] == '\r' || uid[ulen - 1] == '\n')) {
uid[--ulen] = '\0';
}
}
if (uid == NULL || strlen(uid) == 0) {
free(uid);
send_json(req, 400, "{\"ok\":false,\"error\":\"missing uid\"}");
return ESP_OK;
}
esp_err_t ret = storage_manager_unbind_uid(uid);
if (ret != ESP_OK) {
free(uid);
send_json(req, 404, "{\"ok\":false,\"error\":\"uid not found\"}");
return ESP_OK;
}
char ok[128];
snprintf(ok, sizeof(ok), "{\"ok\":true,\"uid\":\"%s\"}\n", uid);
ESP_LOGI(TAG, "unbound UID %s via web", uid);
send_json(req, 200, ok);
free(uid);
return ESP_OK;
}
/* ------------------------------------------------------------------ */
/* Captive Portal & Wi-Fi Management Handlers */
/* ------------------------------------------------------------------ */
static esp_err_t handle_captive_portal(httpd_req_t *req)
{
httpd_resp_set_status(req, "302 Found");
httpd_resp_set_hdr(req, "Location", "http://192.168.4.1/");
httpd_resp_send(req, NULL, 0);
return ESP_OK;
}
static esp_err_t handle_wifi_status(httpd_req_t *req)
{
bool conn = wifi_manager_connected();
const char *ssid = wifi_manager_get_connected_ssid();
const char *ip = wifi_manager_get_ip();
int rssi = wifi_manager_get_rssi();
char buf[160];
snprintf(buf, sizeof(buf),
"{\"connected\":%s,\"ssid\":\"%s\",\"ip\":\"%s\",\"rssi\":%d}\n",
conn ? "true" : "false",
ssid ? ssid : "",
ip ? ip : "0.0.0.0",
rssi);
send_json(req, 200, buf);
return ESP_OK;
}
static esp_err_t handle_wifi_scan(httpd_req_t *req)
{
wifi_ap_record_t *records = NULL;
uint16_t count = 0;
esp_err_t err = wifi_manager_scan_networks(&records, &count);
cJSON *root = cJSON_CreateArray();
if (err == ESP_OK && records != NULL && root != NULL) {
for (uint16_t i = 0; i < count; i++) {
cJSON *item = cJSON_CreateObject();
if (item) {
cJSON_AddStringToObject(item, "ssid", (const char *)records[i].ssid);
cJSON_AddNumberToObject(item, "rssi", records[i].rssi);
const char *auth_str = "Open";
if (records[i].authmode == WIFI_AUTH_WEP) auth_str = "WEP";
else if (records[i].authmode == WIFI_AUTH_WPA_PSK) auth_str = "WPA";
else if (records[i].authmode == WIFI_AUTH_WPA2_PSK) auth_str = "WPA2";
else if (records[i].authmode == WIFI_AUTH_WPA_WPA2_PSK) auth_str = "WPA/WPA2";
else if (records[i].authmode >= WIFI_AUTH_WPA3_PSK) auth_str = "WPA3";
cJSON_AddStringToObject(item, "auth", auth_str);
cJSON_AddItemToArray(root, item);
}
}
}
if (records) {
free(records);
}
char *out = root ? cJSON_PrintUnformatted(root) : NULL;
if (root) cJSON_Delete(root);
if (out) {
send_json(req, 200, out);
free(out);
} else {
send_json(req, 200, "[]\n");
}
return ESP_OK;
}
static esp_err_t handle_wifi_saved(httpd_req_t *req)
{
wifi_profile_t profiles[WIFI_MAX_PROFILES];
int count = wifi_manager_get_saved_profiles(profiles, WIFI_MAX_PROFILES);
cJSON *root = cJSON_CreateArray();
if (root) {
for (int i = 0; i < count; i++) {
cJSON *item = cJSON_CreateObject();
if (item) {
cJSON_AddStringToObject(item, "ssid", profiles[i].ssid);
cJSON_AddItemToArray(root, item);
}
}
char *out = cJSON_PrintUnformatted(root);
cJSON_Delete(root);
if (out) {
send_json(req, 200, out);
free(out);
return ESP_OK;
}
}
send_json(req, 200, "[]\n");
return ESP_OK;
}
static esp_err_t handle_wifi_connect(httpd_req_t *req)
{
if (req->content_len <= 0 || req->content_len >= HTTPD_BODY_MAX) {
send_json(req, 400, "{\"ok\":false,\"error\":\"bad body\"}");
return ESP_OK;
}
char *form = malloc((size_t)req->content_len + 1);
if (form == NULL) {
send_json(req, 500, "{\"ok\":false,\"error\":\"no mem\"}");
return ESP_OK;
}
int got = httpd_req_recv(req, form, (size_t)req->content_len);
if (got != req->content_len) {
free(form);
send_json(req, 400, "{\"ok\":false,\"error\":\"short body\"}");
return ESP_OK;
}
form[got] = '\0';
char *ssid = get_form_param(form, "ssid");
char *pass = get_form_param(form, "pass");
free(form);
if (ssid) {
size_t slen = strlen(ssid);
while (slen > 0 && (ssid[slen - 1] == ' ' || ssid[slen - 1] == '\r' || ssid[slen - 1] == '\n')) {
ssid[--slen] = '\0';
}
}
if (ssid == NULL || strlen(ssid) == 0) {
free(ssid);
free(pass);
send_json(req, 400, "{\"ok\":false,\"error\":\"missing ssid\"}");
return ESP_OK;
}
const char *p = pass ? pass : "";
wifi_manager_connect_new(ssid, p, true);
char ok[128];
snprintf(ok, sizeof(ok), "{\"ok\":true,\"ssid\":\"%s\"}\n", ssid);
send_json(req, 200, ok);
free(ssid);
free(pass);
return ESP_OK;
}
static esp_err_t handle_wifi_forget(httpd_req_t *req)
{
if (req->content_len <= 0 || req->content_len >= HTTPD_BODY_MAX) {
send_json(req, 400, "{\"ok\":false,\"error\":\"bad body\"}");
return ESP_OK;
}
char *form = malloc((size_t)req->content_len + 1);
if (form == NULL) {
send_json(req, 500, "{\"ok\":false,\"error\":\"no mem\"}");
return ESP_OK;
}
int got = httpd_req_recv(req, form, (size_t)req->content_len);
if (got != req->content_len) {
free(form);
send_json(req, 400, "{\"ok\":false,\"error\":\"short body\"}");
return ESP_OK;
}
form[got] = '\0';
char *ssid = get_form_param(form, "ssid");
free(form);
if (ssid) {
size_t slen = strlen(ssid);
while (slen > 0 && (ssid[slen - 1] == ' ' || ssid[slen - 1] == '\r' || ssid[slen - 1] == '\n')) {
ssid[--slen] = '\0';
}
}
if (ssid == NULL || strlen(ssid) == 0) {
free(ssid);
send_json(req, 400, "{\"ok\":false,\"error\":\"missing ssid\"}");
return ESP_OK;
}
wifi_manager_delete_profile(ssid);
char ok[128];
snprintf(ok, sizeof(ok), "{\"ok\":true,\"ssid\":\"%s\"}\n", ssid);
send_json(req, 200, ok);
free(ssid);
return ESP_OK;
}
/* ------------------------------------------------------------------ */
/* SoftAP + server */
/* ------------------------------------------------------------------ */
esp_err_t web_server_start(void)
{
if (s_server != NULL) {
return ESP_OK;
}
/* If Wi-Fi is not yet started, configure AP and start it */
wifi_mode_t mode;
if (esp_wifi_get_mode(&mode) != ESP_OK) {
esp_netif_t *ap = esp_netif_get_handle_from_ifkey("WIFI_AP_DEF");
if (ap == NULL) {
ap = esp_netif_create_default_wifi_ap();
if (ap != NULL) {
esp_netif_set_hostname(ap, "mtg-companion");
}
}
(void)esp_wifi_set_mode(WIFI_MODE_APSTA);
wifi_config_t wifi_cfg = {
.ap = {
.ssid_len = sizeof(AP_SSID) - 1,
.max_connection = 4,
.authmode = (AP_PASS[0] == '\0') ? WIFI_AUTH_OPEN : WIFI_AUTH_WPA2_PSK,
},
};
strncpy((char *)wifi_cfg.ap.ssid, AP_SSID, sizeof(wifi_cfg.ap.ssid) - 1);
if (AP_PASS[0] != '\0') {
strncpy((char *)wifi_cfg.ap.password, AP_PASS, sizeof(wifi_cfg.ap.password) - 1);
}
(void)esp_wifi_set_config(WIFI_IF_AP, &wifi_cfg);
(void)esp_wifi_start();
}
httpd_config_t config = HTTPD_DEFAULT_CONFIG();
config.stack_size = 8 * 1024;
config.max_uri_handlers = 24;
config.lru_purge_enable = true;
config.keep_alive_enable = true;
config.max_open_sockets = 4;
esp_err_t ret = httpd_start(&s_server, &config);
if (ret != ESP_OK) {
ESP_LOGE(TAG, "httpd_start failed: %s", esp_err_to_name(ret));
return ret;
}
/* Core Pairing & Card APIs */
ESP_ERROR_CHECK(httpd_register_uri_handler(s_server, &URI_ROOT));
ESP_ERROR_CHECK(httpd_register_uri_handler(s_server, &URI_LAST_UID));
ESP_ERROR_CHECK(httpd_register_uri_handler(s_server, &URI_BIND));
ESP_ERROR_CHECK(httpd_register_uri_handler(s_server, &URI_CARDS));
ESP_ERROR_CHECK(httpd_register_uri_handler(s_server, &URI_ART));
ESP_ERROR_CHECK(httpd_register_uri_handler(s_server, &URI_UNBIND));
/* Wi-Fi Management APIs */
ESP_ERROR_CHECK(httpd_register_uri_handler(s_server, &URI_WIFI_STATUS));
ESP_ERROR_CHECK(httpd_register_uri_handler(s_server, &URI_WIFI_SCAN));
ESP_ERROR_CHECK(httpd_register_uri_handler(s_server, &URI_WIFI_SAVED));
ESP_ERROR_CHECK(httpd_register_uri_handler(s_server, &URI_WIFI_CONNECT));
ESP_ERROR_CHECK(httpd_register_uri_handler(s_server, &URI_WIFI_FORGET));
/* Captive Portal OS Probes */
ESP_ERROR_CHECK(httpd_register_uri_handler(s_server, &URI_CP_APPLE));
ESP_ERROR_CHECK(httpd_register_uri_handler(s_server, &URI_CP_204_1));
ESP_ERROR_CHECK(httpd_register_uri_handler(s_server, &URI_CP_204_2));
ESP_ERROR_CHECK(httpd_register_uri_handler(s_server, &URI_CP_WIN_1));
ESP_ERROR_CHECK(httpd_register_uri_handler(s_server, &URI_CP_WIN_2));
ESP_ERROR_CHECK(httpd_register_uri_handler(s_server, &URI_CP_FF_1));
ESP_ERROR_CHECK(httpd_register_uri_handler(s_server, &URI_CP_FF_2));
/* Start Captive Portal DNS redirection server */
dns_server_start();
ESP_LOGI(TAG, "Web server ready on all interfaces (Hotspot: 192.168.4.1, Wi-Fi: %s)", wifi_manager_get_ip());
return ESP_OK;
}
bool web_server_is_running(void)
{
return s_server != NULL;
}
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