wip

src/lib/whois.ts

@@ -0,0 +1,55 @@
+export class WhoIs {
+  rdapEndpoints: Record<string, string> | null = null;
+  error: string | null = null;
+
+  async init() {
+    await this.loadRdapEndpoints();
+  }
+
+  async loadRdapEndpoints() {
+    try {
+      const response = await fetch(
+        `https://cors.klemek.fr/https://data.iana.org/rdap/dns.json`,
+      );
+      const content: { services: { 0: string[]; 1: string[] }[] } =
+        await response.json();
+      const rdapEndpoints: Record<string, string> = {};
+      content.services.forEach((item) => {
+        if (item[1][0]) {
+          const supplier: string = item[1][0];
+          item[0].forEach((domain: string) => {
+            rdapEndpoints[domain] = supplier;
+          });
+        }
+      });
+      this.rdapEndpoints = rdapEndpoints;
+    } catch (e) {
+      this.error = "Could not load RDAP endpoints";
+      throw e;
+    }
+  }
+
+  getRdapQuery(domain: string): string {
+    if (this.rdapEndpoints === null) {
+      throw Error("RDAP endpoints not loaded");
+    }
+    for (const tld of Object.keys(this.rdapEndpoints)) {
+      if (domain.endsWith(`.${tld}`) && this.rdapEndpoints[tld]) {
+        return `${this.rdapEndpoints[tld]}/domain/${domain}`;
+      }
+    }
+    throw Error(`RDAP supplier not found for ${domain}`);
+  }
+
+  async isDomainAvailable(domain: string): Promise<boolean> {
+    const url = this.getRdapQuery(domain);
+    try {
+      const response = await fetch(`https://cors.klemek.fr/${url}`, {
+        method: "HEAD",
+      });
+      return response.status === 404;
+    } catch {
+      return false;
+    }
+  }
+}