now we read from a file

domains.txt

+*.nogweii.net
+*.github.com
+*.microsoft.com
+*.google.com
+*.netflix.com
+*.cloudflare.com
+flowers-to-the-world.com
+sni.cloudflaressl.com

main.go

@@ -2,17 +2,23 @@ package main
 
 import (
 	"strings"
+	"os"
+	"bufio"
 
 	"github.com/CaliDog/certstream-go"
 	"github.com/gobwas/glob"
 	log "github.com/sirupsen/logrus"
 )
 
+var globs []glob.Glob
+
 func main() {
 	log.WithFields(log.Fields{
 		"version": "0.0.0", // TODO: actually get the version number
 	}).Info("Starting my certificate alert")
 
+	readDomainsFromFile("domains.txt")
+
 	stream, errStream := certstream.CertStreamEventStream(true)
 
 	for {
@@ -46,22 +52,6 @@ func main() {
 }
 
 func matchesDomains(domainName string) bool {
-	var globs []glob.Glob
-	myGlob, err := glob.Compile("*.nogweii.net")
-	if err != nil {
-		log.WithFields(log.Fields{"error": err}).Fatal("Failed to compile glob")
-	}
-	globs = append(globs, myGlob)
-
-	// TODO: replace this with a file
-	globs = append(globs, glob.MustCompile("*.github.com"))
-	globs = append(globs, glob.MustCompile("*.microsoft.com"))
-	globs = append(globs, glob.MustCompile("*.google.com"))
-	globs = append(globs, glob.MustCompile("*.netflix.com"))
-	globs = append(globs, glob.MustCompile("*.cloudflare.com"))
-	globs = append(globs, glob.MustCompile("flowers-to-the-world.com"))
-	globs = append(globs, glob.MustCompile("sni.cloudflaressl.com"))
-
 	var any_match = false
     for _, glob := range globs {
 		 any_match = glob.Match(domainName) || any_match
@@ -69,3 +59,28 @@ func matchesDomains(domainName string) bool {
 
 	return any_match
 }
+
+func readDomainsFromFile(filepath string) []glob.Glob {
+	file, err := os.Open(filepath)
+    if err != nil {
+		log.WithFields(log.Fields{"error": err}).Fatal("Failed to open file ", filepath)
+    }
+    defer file.Close()
+ 
+    scanner := bufio.NewScanner(file)
+    for scanner.Scan() {
+		text := scanner.Text()
+		// TODO: skip blank and commented lines
+		myGlob, err := glob.Compile(text)
+		if err != nil {
+			log.WithFields(log.Fields{"error": err}).Fatal("Invalid glob ", text)
+		}
+		globs = append(globs, myGlob)
+    }
+ 
+    if err := scanner.Err(); err != nil {
+		log.WithFields(log.Fields{"error": err}).Fatal("Could not scan through file")
+    }
+
+	return globs
+}