support RSS feed generation

2 files changed, 77 insertions, 0 deletions

diff --git a/backend/christine.website/hash.go b/backend/christine.website/hash.go
new file mode 100644
index 0000000..ed6112c
--- /dev/null
+++ b/backend/christine.website/hash.go
@@ -0,0 +1,14 @@
+package main
+
+import (
+	"crypto/md5"
+	"fmt"
+)
+
+// Hash is a simple wrapper around the MD5 algorithm implementation in the
+// Go standard library. It takes in data and a salt and returns the hashed
+// representation.
+func Hash(data string, salt string) string {
+	output := md5.Sum([]byte(data + salt))
+	return fmt.Sprintf("%x", output)
+}
diff --git a/backend/christine.website/main.go b/backend/christine.website/main.go
index ce0e507..0f43487 100644
--- a/backend/christine.website/main.go
+++ b/backend/christine.website/main.go
@@ -13,7 +13,9 @@ import (
 	"time"
 
 	"github.com/Xe/asarfs"
+	"github.com/Xe/ln"
 	"github.com/gernest/front"
+	"github.com/gorilla/feeds"
 	"github.com/urfave/negroni"
 )
 
@@ -155,12 +157,73 @@ func main() {
 		port = "9090"
 	}
 
+	http.HandleFunc("/blog.rss", createFeed)
+	http.HandleFunc("/blog.atom", createAtom)
+
 	n := negroni.Classic()
 	n.UseHandler(http.DefaultServeMux)
 
 	log.Fatal(http.ListenAndServe(":"+port, n))
 }
 
+var bootTime = time.Now()
+
+var feed = &feeds.Feed{
+	Title:       "Christine Dodrill's Blog",
+	Link:        &feeds.Link{Href: "https://christine.website/blog"},
+	Description: "My blog posts and rants about various technology things.",
+	Author:      &feeds.Author{Name: "Christine Dodrill", Email: "me@christine.website"},
+	Created:     bootTime,
+	Copyright:   "This work is copyright Christine Dodrill. My viewpoints are my own and not the view of any employer past, current or future.",
+}
+
+func init() {
+	for _, item := range posts {
+		itime, _ := time.Parse("2006-01-02", item.Date)
+		feed.Items = append(feed.Items, &feeds.Item{
+			Title:       item.Title,
+			Link:        &feeds.Link{Href: "https://christine.website/" + item.Link},
+			Description: item.Summary,
+			Created:     itime,
+		})
+	}
+}
+
+// IncrediblySecureSalt *******
+const IncrediblySecureSalt = "hunter2"
+
+func createFeed(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/rss+xml")
+	w.Header().Set("ETag", Hash(bootTime.String(), IncrediblySecureSalt))
+
+	err := feed.WriteRss(w)
+	if err != nil {
+		http.Error(w, "Internal server error", http.StatusInternalServerError)
+		ln.Error(err, ln.F{
+			"remote_addr": r.RemoteAddr,
+			"action":      "generating_rss",
+			"uri":         r.RequestURI,
+			"host":        r.Host,
+		})
+	}
+}
+
+func createAtom(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/atom+xml")
+	w.Header().Set("ETag", Hash(bootTime.String(), IncrediblySecureSalt))
+
+	err := feed.WriteAtom(w)
+	if err != nil {
+		http.Error(w, "Internal server error", http.StatusInternalServerError)
+		ln.Error(err, ln.F{
+			"remote_addr": r.RemoteAddr,
+			"action":      "generating_rss",
+			"uri":         r.RequestURI,
+			"host":        r.Host,
+		})
+	}
+}
+
 func writeBlogPosts(w http.ResponseWriter, r *http.Request) {
 	p := []interface{}{}
 	for _, post := range posts {