Create app.py

app.py

@@ -0,0 +1,39 @@
+import json
+import whois
+from fastapi import FastAPI, Request
+from fastapi.responses import HTMLResponse
+from fastapi.templating import Jinja2Templates
+
+app = FastAPI()
+templates = Jinja2Templates(directory="templates")
+
+
+def find_related_domains(domain):
+    related_domains = []
+    # 対象のドメインのWHOISレコードを取得
+    w = whois.whois(domain)
+    # 所有者情報を取得
+    owner = w.get('owner')
+    # 同じ所有者情報を持つドメインを検索
+    if owner:
+        for w in whois.query('domain ' + domain):
+            if w.get('owner') == owner:
+                related_domains.append(w.domain)
+    return related_domains
+
+
+@app.get("/")
+def read_root(request: Request):
+    return templates.TemplateResponse("index.html", {"request": request})
+
+
+@app.get("/api/find-related-domains")
+def find_related_domains_api(domain: str):
+    related_domains = find_related_domains(domain)
+    return {"related_domains": related_domains}
+
+
+@app.get("/find-related-domains")
+def find_related_domains_web(domain: str):
+    related_domains = find_related_domains(domain)
+    return templates.TemplateResponse("index.html", {"related_domains": related_domains, "domain": domain})