cmd/owl/webmention.go

@@ -0,0 +1,70 @@
+package main
+
+import (
+	"h4kor/owl-blogs"
+
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	rootCmd.AddCommand(webmentionCmd)
+}
+
+var webmentionCmd = &cobra.Command{
+	Use:   "webmention",
+	Short: "Send webmentions for posts, optionally for a specific user",
+	Long:  `Send webmentions for posts, optionally for a specific user`,
+	Run: func(cmd *cobra.Command, args []string) {
+		repo, err := owl.OpenRepository(repoPath)
+		if err != nil {
+			println("Error opening repository: ", err.Error())
+			return
+		}
+
+		var users []owl.User
+		if user == "" {
+			// send webmentions for all users
+			users, err = repo.Users()
+			if err != nil {
+				println("Error getting users: ", err.Error())
+				return
+			}
+		} else {
+			// send webmentions for a specific user
+			user, err := repo.GetUser(user)
+			users = append(users, user)
+			if err != nil {
+				println("Error getting user: ", err.Error())
+				return
+			}
+		}
+
+		for _, user := range users {
+			posts, err := user.Posts()
+			if err != nil {
+				println("Error getting posts: ", err.Error())
+			}
+
+			for _, post := range posts {
+				println("Webmentions for post: ", post.Title())
+
+				err := post.ScanForLinks()
+				if err != nil {
+					println("Error scanning post for links: ", err.Error())
+					continue
+				}
+
+				webmentions := post.OutgoingWebmentions()
+				println("Found ", len(webmentions), " links")
+				for _, webmention := range webmentions {
+					err = post.SendWebmention(webmention)
+					if err != nil {
+						println("Error sending webmentions: ", err.Error())
+					} else {
+						println("Webmention sent to ", webmention.Target)
+					}
+				}
+			}
+		}
+	},
+}

post.go

@@ -375,13 +375,12 @@ func (post *Post) SendWebmention(webmention WebmentionOut) error {
 
 	html, err := post.user.repo.HttpClient.Get(webmention.Target)
 	if err != nil {
-		// TODO handle error
 		webmention.Supported = false
 		return err
 	}
+
 	endpoint, err := post.user.repo.Parser.GetWebmentionEndpoint(html)
 	if err != nil {
-		// TODO handle error
 		webmention.Supported = false
 		return err
 	}
@@ -394,7 +393,6 @@ func (post *Post) SendWebmention(webmention WebmentionOut) error {
 	_, err = post.user.repo.HttpClient.Post(endpoint, payload)
 
 	if err != nil {
-		// TODO handle error
 		return err
 	}
 

webmention.go

@@ -3,6 +3,8 @@ package owl
 import (
 	"bytes"
 	"errors"
+	"fmt"
+	"io"
 	"net/http"
 	"net/url"
 	"strings"
@@ -46,13 +48,16 @@ type ParsedHEntry struct {
 
 func (OwlHttpClient) Get(url string) ([]byte, error) {
 	resp, err := http.Get(url)
+
+	if resp.StatusCode < 200 || resp.StatusCode > 299 {
+		return make([]byte, 0), errors.New("Failed to get url. Status code: " + fmt.Sprint(resp.StatusCode))
+	}
+
 	if err != nil {
 		return []byte{}, err
 	}
-	var data []byte
-	_, err = resp.Body.Read(data)
-	// TODO: encoding
-	return data, err
+	defer resp.Body.Close()
+	return io.ReadAll(resp.Body)
 }
 
 func (OwlHttpClient) Post(url string, data url.Values) ([]byte, error) {
@@ -60,10 +65,8 @@ func (OwlHttpClient) Post(url string, data url.Values) ([]byte, error) {
 	if err != nil {
 		return []byte{}, err
 	}
-	var respData []byte
-	_, err = resp.Body.Read(respData)
-
-	return respData, err
+	defer resp.Body.Close()
+	return io.ReadAll(resp.Body)
 }
 
 func collectText(n *html.Node, buf *bytes.Buffer) {
@@ -152,7 +155,7 @@ func (OwlHtmlParser) GetWebmentionEndpoint(data []byte) (string, error) {
 
 	var findEndpoint func(*html.Node) (string, error)
 	findEndpoint = func(n *html.Node) (string, error) {
-		if n.Type == html.ElementNode && n.Data == "link" {
+		if n.Type == html.ElementNode && (n.Data == "link" || n.Data == "a") {
 			for _, attr := range n.Attr {
 				if attr.Key == "rel" && attr.Val == "webmention" {
 					for _, attr := range n.Attr {

webmention_test.go

@@ -34,3 +34,29 @@ func TestParseValidHEntryWithoutTitle(t *testing.T) {
 		t.Errorf("Wrong Title. Expected %v, got %v", "Foo", entry.Title)
 	}
 }
+
+func TestGetWebmentionEndpointLink(t *testing.T) {
+	html := []byte("<link rel=\"webmention\" href=\"http://example.com/webmention\" />")
+	parser := &owl.OwlHtmlParser{}
+	endpoint, err := parser.GetWebmentionEndpoint(html)
+
+	if err != nil {
+		t.Errorf("Unable to parse feed: %v", err)
+	}
+	if endpoint != "http://example.com/webmention" {
+		t.Errorf("Wrong endpoint. Expected %v, got %v", "http://example.com/webmention", endpoint)
+	}
+}
+
+func TestGetWebmentionEndpointLinkA(t *testing.T) {
+	html := []byte("<a rel=\"webmention\" href=\"http://example.com/webmention\" />")
+	parser := &owl.OwlHtmlParser{}
+	endpoint, err := parser.GetWebmentionEndpoint(html)
+
+	if err != nil {
+		t.Errorf("Unable to parse feed: %v", err)
+	}
+	if endpoint != "http://example.com/webmention" {
+		t.Errorf("Wrong endpoint. Expected %v, got %v", "http://example.com/webmention", endpoint)
+	}
+}