From 30bbc1de3365620e24097812cf919dde9f9fd3f4 Mon Sep 17 00:00:00 2001
From: Matt Baer <matt@write.as>
Date: Thu, 28 Nov 2024 13:52:49 -0500
Subject: [PATCH] Add basic webfinger check utility

---
 cmd/ap-find/main.go | 55 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 cmd/ap-find/main.go

diff --git a/cmd/ap-find/main.go b/cmd/ap-find/main.go
new file mode 100644
index 0000000..4e0211f
--- /dev/null
+++ b/cmd/ap-find/main.go
@@ -0,0 +1,55 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"os"
+	"strings"
+)
+
+func main() {
+	if len(os.Args) < 2 {
+		log.Fatalln("usage: ap-inspect HANDLE")
+	}
+	handle := strings.TrimLeft(os.Args[1], "@")
+	parts := strings.Split(handle, "@")
+	if len(parts) < 2 {
+		log.Fatalln("invalid handle (expected @handle@host.name)")
+	}
+
+	// Set up request
+	wfURL := "https://" + parts[1] + "/.well-known/webfinger?resource=acct:" + handle
+	log.Printf("Webfinger: %s", wfURL)
+	req, err := http.NewRequest("GET", wfURL, nil)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	// Send request
+	client := &http.Client{}
+	resp, err := client.Do(req)
+	if err != nil {
+		log.Fatalln(err)
+	}
+	if resp != nil && resp.Body != nil {
+		defer resp.Body.Close()
+	}
+
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		log.Fatalln(err)
+	}
+	fmt.Printf("Status  : %s\n", resp.Status)
+
+	// Pretty-print the response
+	var fmttd bytes.Buffer
+	err = json.Indent(&fmttd, body, "", "  ")
+	if err != nil {
+		log.Fatalln(err)
+	}
+	fmt.Printf("Response:\n%s\n", fmttd.String())
+}