3fee19c60a
Both httpd servers now expose JSON endpoints (POST /api/wifi on the commissioning AP; GET /api/status, GET/POST /api/mqtt on the settings server) instead of form-urlencoded bodies, with CORS enabled (http_cors.h) so a separately-hosted web app can call them from a browser across origins -- not just the on-device pages, which now use the same endpoints via fetch() too. No JSON library ships with ESP-IDF v6.0.2 core (verified: no cJSON, no bundled json component). Given these payloads are tiny, flat, fixed-shape objects, json_helpers.h hand-rolls minimal strstr-based extraction rather than adding a 4th external registry dependency (already have mdns, mqtt, led_strip). The settings page (mqtt.cpp) changes from server-side snprintf-built dynamic HTML to a static embedded settings.html that fetches /api/mqtt on load -- simpler code, and the actual point of the refactor: the same API a future kvida-sdk client can use. url_decode.h is removed (no longer needed once request bodies are JSON instead of form-urlencoded). Verified end-to-end against real hardware: /api/status, /api/mqtt, and the CORS preflight for POST /api/mqtt all return correct responses/headers when queried with a cross-origin Origin header. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
25 lines
686 B
C++
25 lines
686 B
C++
#pragma once
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#include "esp_http_server.h"
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namespace kvida {
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// Allows a separately-hosted web app (kvida-sdk, e.g. served from
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// localhost:5173 via Vite during development) to call the device's JSON
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// API from a browser across origins.
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inline void add_cors_headers(httpd_req_t *req)
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{
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httpd_resp_set_hdr(req, "Access-Control-Allow-Origin", "*");
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httpd_resp_set_hdr(req, "Access-Control-Allow-Methods", "GET, POST, OPTIONS");
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httpd_resp_set_hdr(req, "Access-Control-Allow-Headers", "Content-Type");
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}
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inline esp_err_t cors_preflight_handler(httpd_req_t *req)
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{
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add_cors_headers(req);
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httpd_resp_send(req, nullptr, 0);
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return ESP_OK;
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}
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} // namespace kvida
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