Function cbm_jsonrpc_parse

src/mcp/mcp.c:155–201

 * ══════════════════════════════════════════════════════════════════ */

int cbm_jsonrpc_parse(const char *line, cbm_jsonrpc_request_t *out) {
    memset(out, 0, sizeof(*out));
    out->id = CBM_NOT_FOUND;

    yyjson_doc *doc = yyjson_read(line, strlen(line), 0);
    if (!doc) {
        return CBM_NOT_FOUND;
    }

    yyjson_val *root = yyjson_doc_get_root(doc);
    if (!yyjson_is_obj(root)) {
        yyjson_doc_free(doc);
        return CBM_NOT_FOUND;
    }

    yyjson_val *v_jsonrpc = yyjson_obj_get(root, "jsonrpc");
    yyjson_val *v_method = yyjson_obj_get(root, "method");
    yyjson_val *v_id = yyjson_obj_get(root, "id");
    yyjson_val *v_params = yyjson_obj_get(root, "params");

    if (!v_method || !yyjson_is_str(v_method)) {
        yyjson_doc_free(doc);
        return CBM_NOT_FOUND;
    }

    out->jsonrpc =
        heap_strdup(v_jsonrpc && yyjson_is_str(v_jsonrpc) ? yyjson_get_str(v_jsonrpc) : "2.0");
    out->method = heap_strdup(yyjson_get_str(v_method));

    if (v_id) {
        out->has_id = true;
        if (yyjson_is_int(v_id)) {
            out->id = yyjson_get_int(v_id);
        } else if (yyjson_is_str(v_id)) {
            /* JSON-RPC 2.0 §4 permits string ids (Claude Desktop uses them).
             * Preserve verbatim instead of coercing via strtol (issue #253). */
            out->id_str = heap_strdup(yyjson_get_str(v_id));
        }
    }

    if (v_params) {
        out->params_raw = yyjson_val_write(v_params, 0, NULL);
    }

    yyjson_doc_free(doc);
    return 0;
}

void cbm_jsonrpc_request_free(cbm_jsonrpc_request_t *r) {
    if (!r) {