Add Perplexity IP (#24)

* perplexity IP

* fix text perplexity

* update readme

* update Perplexity

perplexity/downloader.sh

@@ -0,0 +1,44 @@
+#!/bin/bash
+
+
+# https://docs.perplexity.ai/guides/bots
+
+set -euo pipefail
+set -x
+
+
+# get from public ranges
+download_and_parse_json() {
+    curl --connect-timeout 60 --retry 3 --retry-delay 15 -s "${1}" \
+    -H 'accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7' \
+    -H 'accept-language: en' \
+    -H 'cache-control: no-cache' \
+    -H 'pragma: no-cache' \
+    -H 'priority: u=0, i' \
+    -H 'sec-ch-ua: "Not(A:Brand";v="99", "Google Chrome";v="133", "Chromium";v="133"' \
+    -H 'sec-ch-ua-mobile: ?0' \
+    -H 'sec-ch-ua-platform: "macOS"' \
+    -H 'sec-fetch-dest: document' \
+    -H 'sec-fetch-mode: navigate' \
+    -H 'sec-fetch-site: none' \
+    -H 'sec-fetch-user: ?1' \
+    -H 'upgrade-insecure-requests: 1' \
+    -H 'user-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36' \
+    > /tmp/perplexity.json
+
+    jq '.prefixes[] | [.ipv4Prefix][] | select(. != null)' -r /tmp/perplexity.json > /tmp/perplexity.txt
+
+    # save ipv4
+    grep -v ':' /tmp/perplexity.txt >> /tmp/perplexity-ipv4.txt
+
+    # ipv6 not provided
+
+    sleep 10
+}
+
+download_and_parse_json "https://www.perplexity.ai/perplexitybot.json"
+download_and_parse_json "https://www.perplexity.ai/perplexity-user.json"
+
+
+# sort & uniq
+sort -V /tmp/perplexity-ipv4.txt | uniq > perplexity/ipv4.txt