@ankimcp/anki-mcp-server

Version:
Model Context Protocol server for Anki - enables AI assistants to interact with your Anki flashcards
78 lines • 3.72 kB
JavaScript
"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
    return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
    if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var __param = (this && this.__param) || function (paramIndex, decorator) {
    return function (target, key) { decorator(target, key, paramIndex); }
};
var HostValidationGuard_1;
Object.defineProperty(exports, "__esModule", { value: true });
exports.HostValidationGuard = void 0;
exports.shouldWarnLoopbackOnly = shouldWarnLoopbackOnly;
const common_1 = require("@nestjs/common");
const config_1 = require("../../config/index.js");
const LOOPBACK_BIND_HOSTS = new Set(["localhost", "127.0.0.1", "::1"]);
function shouldWarnLoopbackOnly(host, allowedHosts) {
    const normalized = host.trim().toLowerCase();
    const isLoopbackBind = LOOPBACK_BIND_HOSTS.has(normalized);
    return !isLoopbackBind && allowedHosts.length === 0;
}
let HostValidationGuard = class HostValidationGuard {
    static { HostValidationGuard_1 = this; }
    logger = new common_1.Logger(HostValidationGuard_1.name);
    allowedHosts;
    static LOOPBACK_HOSTS = ["localhost", "127.0.0.1", "::1"];
    constructor(config) {
        this.allowedHosts = new Set([
            ...HostValidationGuard_1.LOOPBACK_HOSTS,
            ...config.allowedHosts.map((host) => HostValidationGuard_1.extractHostname(host)),
        ].filter((host) => host.length > 0));
    }
    canActivate(context) {
        const request = context.switchToHttp().getRequest();
        const hostHeader = request.headers.host;
        if (!hostHeader || hostHeader.trim().length === 0) {
            this.logger.warn("Rejected request with missing Host header (DNS-rebinding protection)");
            return false;
        }
        const hostname = HostValidationGuard_1.extractHostname(hostHeader);
        if (this.allowedHosts.has(hostname)) {
            return true;
        }
        this.logger.warn(`Rejected request with disallowed Host header: "${hostHeader}". ` +
            `Allowed hosts are loopback by default; set ALLOWED_HOSTS ` +
            `(comma-separated hostnames) to permit additional hosts.`);
        return false;
    }
    static extractHostname(value) {
        const trimmed = value.trim().toLowerCase();
        if (trimmed.length === 0) {
            return "";
        }
        if (trimmed.startsWith("[")) {
            const closing = trimmed.indexOf("]");
            if (closing !== -1) {
                return trimmed.slice(1, closing);
            }
        }
        const firstColon = trimmed.indexOf(":");
        const lastColon = trimmed.lastIndexOf(":");
        if (firstColon !== -1 && firstColon === lastColon) {
            return trimmed.slice(0, firstColon);
        }
        return trimmed;
    }
};
exports.HostValidationGuard = HostValidationGuard;
exports.HostValidationGuard = HostValidationGuard = HostValidationGuard_1 = __decorate([
    (0, common_1.Injectable)(),
    __param(0, (0, common_1.Inject)(config_1.APP_CONFIG)),
    __metadata("design:paramtypes", [Object])
], HostValidationGuard);
//# sourceMappingURL=host-validation.guard.js.map