From 6c634d8081a1bb3cc9ee5ebe37a4fefdce975f1d Mon Sep 17 00:00:00 2001
From: fiatjaf <fiatjaf@gmail.com>
Date: Tue, 4 Feb 2025 23:20:35 -0300
Subject: [PATCH] nak curl

---
 curl.go | 102 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 main.go |  11 ++++++
 2 files changed, 113 insertions(+)
 create mode 100644 curl.go

diff --git a/curl.go b/curl.go
new file mode 100644
index 0000000..a039f41
--- /dev/null
+++ b/curl.go
@@ -0,0 +1,102 @@
+package main
+
+import (
+	"context"
+	"encoding/base64"
+	"fmt"
+	"os"
+	"os/exec"
+	"strings"
+
+	"github.com/fiatjaf/cli/v3"
+	"github.com/nbd-wtf/go-nostr"
+	"golang.org/x/exp/slices"
+)
+
+var curlFlags []string
+
+var curl = &cli.Command{
+	Name:        "curl",
+	Usage:       "calls curl but with a nip98 header",
+	Description: "accepts all flags and arguments exactly as they would be passed to curl.",
+	Flags:       defaultKeyFlags,
+	Action: func(ctx context.Context, c *cli.Command) error {
+		kr, _, err := gatherKeyerFromArguments(ctx, c)
+		if err != nil {
+			return err
+		}
+
+		// cowboy parsing of curl flags to get the data we need for nip98
+		var url string
+		method := "GET"
+
+		nextIsMethod := false
+		for _, f := range curlFlags {
+			if strings.HasPrefix(f, "https://") || strings.HasPrefix(f, "http://") {
+				url = f
+			} else if f == "--request" || f == "-X" {
+				nextIsMethod = true
+			} else if nextIsMethod {
+				method = f
+				method, _ = strings.CutPrefix(method, `"`)
+				method, _ = strings.CutSuffix(method, `"`)
+				method = strings.ToUpper(method)
+			}
+			nextIsMethod = false
+		}
+
+		if url == "" {
+			return fmt.Errorf("can't create nip98 event: target url is empty")
+		}
+
+		// make and sign event
+		evt := nostr.Event{
+			Kind:      27235,
+			CreatedAt: nostr.Now(),
+			Tags: nostr.Tags{
+				{"u", url},
+				{"method", method},
+			},
+		}
+		if err := kr.SignEvent(ctx, &evt); err != nil {
+			return err
+		}
+
+		// the first 2 indexes of curlFlags were reserved for this
+		curlFlags[0] = "-H"
+		curlFlags[1] = fmt.Sprintf("Authorization: Nostr %s", base64.StdEncoding.EncodeToString([]byte(evt.String())))
+
+		// call curl
+		cmd := exec.Command("curl", curlFlags...)
+		cmd.Stderr = os.Stderr
+		cmd.Stdin = os.Stdin
+		cmd.Stdout = os.Stdout
+		cmd.Run()
+		return nil
+	},
+}
+
+func realCurl() error {
+	curlFlags = make([]string, 2, len(os.Args)-4)
+	keyFlags := make([]string, 0, 5)
+
+	for i := 0; i < len(os.Args[2:]); i++ {
+		arg := os.Args[i+2]
+		if slices.ContainsFunc(defaultKeyFlags, func(f cli.Flag) bool {
+			bareArg, _ := strings.CutPrefix(arg, "-")
+			bareArg, _ = strings.CutPrefix(bareArg, "-")
+			return slices.Contains(f.Names(), bareArg)
+		}) {
+			keyFlags = append(keyFlags, arg)
+			if arg != "--prompt-sec" {
+				i++
+				val := os.Args[i+2]
+				keyFlags = append(keyFlags, val)
+			}
+		} else {
+			curlFlags = append(curlFlags, arg)
+		}
+	}
+
+	return curl.Run(context.Background(), keyFlags)
+}
diff --git a/main.go b/main.go
index f2934fa..91aa68f 100644
--- a/main.go
+++ b/main.go
@@ -39,6 +39,7 @@ var app = &cli.Command{
 		outbox,
 		wallet,
 		mcpServer,
+		curl,
 	},
 	Version: version,
 	Flags: []cli.Flag{
@@ -140,6 +141,16 @@ func main() {
 		Usage: "prints the version",
 	}
 
+	// a megahack to enable this curl command proxy
+	if len(os.Args) > 2 && os.Args[1] == "curl" {
+		if err := realCurl(); err != nil {
+			stdout(err)
+			colors.reset()
+			os.Exit(1)
+		}
+		return
+	}
+
 	if err := app.Run(context.Background(), os.Args); err != nil {
 		stdout(err)
 		colors.reset()