Add working parser and conf example

conf_example.json

@@ -0,0 +1,7 @@
+{
+	"^(?P<num>tata[0-9])(?P<num2>[0-9 ]+)$": "https://example.com/url_to_test1?ref={num}&ref2={num2}",
+	"^token([0-9]+)$": "https://test2.example.com/url_to_test2?ref={}",
+	"g +([0-9]+)": "https://localhost/url_to_test2?ref={}",
+	"a +([0-9a-z]+)": "https://192.168.2.3/url_to_test2?ref={}",
+	"(.*)": "https://www.qwant.com/?q={}"
+}

parser.py

@@ -0,0 +1,46 @@
+import re
+import json
+import ipaddress
+import readline
+import socket
+from urllib.parse import quote_plus as qp
+from urllib.parse import urlsplit
+
+with open("conf.json", 'r') as jsonconf:
+    conf = json.load(jsonconf,
+                     object_pairs_hook=lambda x: {re.compile(i[0],
+                                                             flags=re.I): i[1]
+                                                             for i in x})
+
+terms = ["TOTO", "TITI", "TATA"]
+rigidurl = "https://rigid.example.com/query?kwd={kwd}&val={val}"
+
+safe_domains = ['example.com']
+
+
+def get_redirect_url(key: str):
+    keywords = key.split()
+    if keywords and keywords[0].upper() in terms:
+        return rigidurl.format(kwd = qp(keywords[0]),
+                              val = qp(" ".join(keywords[1:]))), True
+    for regex, substitute in conf.items():
+        if (match := regex.fullmatch(key)) is not None:
+            url = substitute.format(*[qp(g) for g in match.groups()],
+                                    **{k:qp(v) for k, v
+                                       in match.groupdict().items()})
+            break
+    netloc = urlsplit(url).netloc
+    try:
+        safe = (netloc in safe_domains
+                or any(dom.split('.') ==
+                       netloc.split('.')[-len(dom.split('.')):]
+                       for dom in safe_domains)
+                or all(ipaddress.ip_address(a[4][0]).is_private
+                       for a in socket.getaddrinfo(netloc, 0)))
+    except socket.gaierror:
+        safe = False
+    return url, safe
+
+if __name__ == "__main__":
+    while (key:= input("Keywords? ")) != "quit":
+        print(get_redirect_url(key=key))