Merge pull request #8 from rneatherway/rneatherway/token-env-var

Read authn information from environment for now

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.17.1
+          go-version: 1.18.1
       - name: Build
         uses: goreleaser/goreleaser-action@v2
         with:
@@ -34,6 +34,6 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.17.1
+          go-version: 1.18.1
       - name: Test
         run: go test ./...

.github/workflows/release.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.17.1
+          go-version: 1.18.1
       - name: Release
         uses: goreleaser/goreleaser-action@v2
         with:

go.mod

@@ -1,6 +1,6 @@
 module github.com/rneatherway/gh-slack
 
-go 1.17
+go 1.18
 
 require (
 	github.com/cli/go-gh v0.0.3

internal/slackclient/client.go

@@ -95,7 +95,7 @@ func New(team string, log *log.Logger) (*SlackClient, error) {
 	}
 	cachePath := path.Join(dataHome, "gh-slack")
 
-	auth, err := getSlackAuth(team)
+	auth, err := getSlackAuthFromEnv()
 	if err != nil {
 		return nil, err
 	}

internal/slackclient/token.go

@@ -6,10 +6,12 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"net/url"
 	"os"
 	"path"
 	"regexp"
 	"runtime"
+	"strings"
 
 	_ "modernc.org/sqlite"
 )
@@ -88,3 +90,30 @@ func getSlackAuth(team string) (*SlackAuth, error) {
 
 	return &SlackAuth{Token: string(matches[1]), Cookies: map[string]string{"d": cookie}}, nil
 }
+
+func getSlackAuthFromEnv() (*SlackAuth, error) {
+	slackAuth := os.Getenv("SLACK_AUTH")
+	if slackAuth == "" {
+		return nil, errors.New("environment variable SLACK_AUTH not set")
+	}
+
+	token, cookie, found := strings.Cut(slackAuth, "\n")
+	if !found {
+		return nil, errors.New("environment variable SLACK_AUTH not in expected format")
+	}
+
+	key, value, found := strings.Cut(cookie, "=")
+	if !found {
+		return nil, errors.New("environment variable SLACK_AUTH not in expected format")
+	}
+
+	cookie, err := url.PathUnescape(value)
+	if err != nil {
+		return nil, fmt.Errorf("failed to unescape cookie value: %w", err)
+	}
+
+	return &SlackAuth{
+		Token:   token,
+		Cookies: map[string]string{key: cookie},
+	}, nil
+}